- Grand Rapids
- (616) 878-4900
- Detroit
- (313) 532-3006
- TK Alarm Codes
Thermo King Alarm Codes
We’ve compiled a list of common TK alarm codes (error codes) you may encounter:
| # | Color | Description | Operator Action | Product Type |
|---|---|---|---|---|
| 00 | ok | No Alarms Exist | No action required. | Truck, trailer, CR, DAS, DSR |
| 02 | check | Check Evaporator Coil Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 03 | check | Check (Control) Return Air Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 04 | check | Check (Control) Discharge Air Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 05 | ok | Check Ambient Temp Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 06 | ok | Check Coolant Temp Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 07 | ok | Check Engine RPM Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 08 | check | Unit Running on Coil Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 09 | check | High Evaporator Temperature (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 10 | take action | High Discharge Pressure (or Temperature) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 11 | check | Unit or Zone Controlling on Alternate Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 12 | take action | Sensor or Digital Input Shutdown (Zone) | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 13 | check | Sensor Check (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 14 | ok | Defrost Terminated by Time | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 15 | check | Check Glow Plugs or Intake Air Heater | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 16 | ok | Manual Start Not Completed | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 17 | check | Engine Failed to Crank | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 18 | check | High Engine Coolant Temperature | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 19 | check | Low Engine Oil Pressure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 20 | check | Engine (Vapor Motor CR) Failed to Start | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 21 | check | Cooling Cycle Check (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 22 | check | Heating Cycle Check (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 23 | take action | Cooling Cycle Fault (Zone) | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 24 | take action | Heating Cycle Fault (Zone) | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 25 | check | Alternator Check | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 26 | check | Check Refrigeration Capacity (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 27 | take action | Vapor Motor RPM High (CR) | Unit cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 28 | ok | Pretrip or Self Check Abort | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 29 | check | Defrost Damper Circuit Check (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 30 | take action | Defrost Damper Stuck Closed (Zone) | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 31 | check | Check Oil Pressure Switch | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 32 | take action | Refrigeration Capacity Low (Zone) | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 33 | ok | Check Engine RPM | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 34 | check | Check Modulation Circuit | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 35 | take action | Check Run Relay Circuit | Unit cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 36 | take action | Electric Motor Failed to Run | Unit cannot operate and is shut down. Repair immediately. Switch to Diesel Mode | Truck, trailer, CR, DAS, DSR |
| 37 | ok | Check Engine Coolant Level | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 38 | take action | Electric Phase Reversed | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 39 | check | Check Water Valve Circuit | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 40 | check | Check High Speed Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 41 | check | Check Engine Coolant Temp | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 42 | check | Unit Forced to Low Speed | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 43 | ok | Unit Forced to Low Speed Modulation | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 44 | take action | Check Fuel System | Add fuel as necessary. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 45 | check | Check Hot Gas or Hot Gas Bypass Circuit | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 46 | check | Check Air Flow (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 47 | take action | Remote Sensor Shutdown | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 48 | take action | Check Belts or Clutch | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 49 | ok | Check Spare Sensor 1 | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 50 | ok | Reset Clock | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 51 | take action | Check Shutdown Circuit | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 52 | check | Check Heat Circuit (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 53 | check | Check Economizer Valve Circuit | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 54 | ok | Test Mode Timeout | Clear alarm and restart unit. | Truck, trailer, CR, DAS, DSR |
| 55 | ok | Check Engine Speeds | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 56 | check | Check Evaporator Fan Low Speed (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 57 | check | Check Evaporator Fan High Speed (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 61 | check | Low Battery Voltage | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 62 | take action | Ammeter Out of Calibration | Unit cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 63 | take action | Engine or Vapor Motor Stopped | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 64 | ok | Pretrip Reminder | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 65 | check | Abnormal Temperature Differential (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 66 | take action | Low Engine Oil Level | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 67 | check | Check Liquid Line Solenoid Circuit (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 68 | take action | Internal Controller Fault Code | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 70 | ok | Hourmeter Failure | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 71 | ok | Hourmeter 4 Exceeds Set Time Limit | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 72 | ok | Hourmeter 5 Exceeds Set Time Limit | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 73 | ok | Hourmeter 6 Exceeds Set Time Limit | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 74 | ok | Controller Reset to Defaults | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 75 | take action | Controller RAM Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 76 | take action | Controller EPROM Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 77 | take action | Controller EPROM Checksum Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 78 | take action | Data Log EPROM Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 79 | ok | Internal Data Logger Overflow | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 80 | ok | Check Compressor Temp Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 81 | take action | High Compressor Temp | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 82 | take action | High Compressor Temp Shutdown | Unit cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 83 | ok | Low Engine Coolant Temp | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 84 | ok | Restart Null | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 85 | ok | Forced Unit Operation | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 86 | ok | Check Discharge Pressure Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 87 | ok | Check Suction Pressure Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 88 | ok | Reserved for CR | Truck, trailer, CR, DAS, DSR | |
| 89 | ok | Check Electronic Throttling Valve (ETV) Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 90 | ok | Electric Overload | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 91 | ok | Check Electric Ready Input | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 92 | ok | Sensor Grades Not Set (Zone) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 93 | ok | Low Compressor Suction Pressure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 94 | ok | Check Loader #1 Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 95 | ok | Check Loader #2 Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 96 | check | Low Fuel Level | Add fuel as required. | Truck, trailer, CR, DAS, DSR |
| 97 | take action | Failed Remote Return Air Sensor (CR) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 98 | ok | Check Fuel Level Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 99 | take action | High Compressor Pressure Ratio | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 100 | check | Heater Fan Failure (CR) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 101 | take action | Controlling on Evap Coil Outlet Temp (CR) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 102 | check | Low Evaporator Coil Temperature (CR) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 103 | check | Low Heater Fuel Level (CR) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 104 | check | Check Remote Fan Speed (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 105 | check | Check Receiver Tank Press Sol Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 106 | check | Check Purge Valve Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 107 | check | Check Condenser Inlet Sol Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 108 | check | Door Open Timeout (Zone) | Close doors. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 109 | na | Check High Discharge Pressure Sensor | Replaced by Alarm Code 86 | Truck, trailer, CR, DAS, DSR |
| 110 | check | Check Suction Line Sol Circuit (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 111 | ok | Unit Not Configured Correctly (Zone) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 112 | check | Check Remote Fans (Zone) | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 113 | check | Check Electric Heat Circuit (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 114 | take action | Multiple Alarms - Can Not Run (Zone) | Unit/zone cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 115 | check | Check High Pressure Cut Out Switch | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 116 | ok | Check High Pressure Cut In Switch | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 117 | ok | Auto Switch from Diesel to Electric | Normal operation – does not affect performance. | Truck, trailer, CR, DAS, DSR |
| 118 | ok | Auto Switch from Electric to Diesel | Normal operation – does not affect performance. | Truck, trailer, CR, DAS, DSR |
| 119 | na | Reserved for CR | Truck, trailer, CR, DAS, DSR | |
| 120 | check | Check Alternator Excite Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 121 | check | Check PMW Liquid Injection Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 122 | check | Check Diesel/Electric Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 123 | check | Check Evap Coil Inlet Temp Sensor (CR) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 124 | ok | Check Evap Coil Outlet Temp Sensor (CR) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 125 | check | Check Tank Level Sensor (CR) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 126 | check | Check Back Pressure Regulator (CR) | Manually monitor load temperature. Report this alarm at the end of the day. | Truck, trailer, CR, DAS, DSR |
| 127 | check | Setpoint Not Entered (Zone) | Be sure setpoint is adjusted to required temperature. | Truck, trailer, CR, DAS, DSR |
| 128 | ok | Engine Run Time Maint Reminder #1/Service Due | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 129 | ok | Engine Run Time Maint Reminder #2 | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 130 | ok | Electric Run Time Maint Reminder #1 | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 131 | ok | Electric Run Time Maint Reminder #2 | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 132 | ok | Total Unit Run Time Maint Reminder #1 | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 133 | ok | Total Unit Run Time Maint Reminder #2 | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 134 | ok | Controller Power On Hours | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 135 | ok | Check Spare Digital Inputs | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 136 | ok | Check Spare Digital Outputs | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 137 | check | Check Damper Motor Heater Output | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 138 | ok | Log DAS Real Time Clock Battery Failure (DAS) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 139 | ok | Abort Evacuation Mode | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 140 | na | Not currently used | Truck, trailer, CR, DAS, DSR | |
| 141 | check | Auto Switch Diesel to Electric Disabled | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 142 | check | Check Thermax Valve | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 143 | ok | Check Remote Drain Hose Heater Output (Zone) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 144 | take action | Lost CAN Communications to Expansion Module | Unit cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 145 | check | Lost Controller ON Feedback Signal | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 146 | ok | Software Version Mismatch | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 147 | check | Check Multi-Temp Fan Speed Control Output (Zone) | Manually monitor load temperature. Report this alarm at the end of the day. | Truck, trailer, CR, DAS, DSR |
| 148 | check | Auto Switch Electric to Diesel Disabled | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 149 | check | Alarm Not Identified | If unit/zone is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 150 | ok | Sensor Out of Range Low (DAS and HMI) (Zone) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 151 | ok | Sensor Out of Range High (DAS and HMI) (Zone) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 152 | ok | DAS Failed Sensor (DAS) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 153 | ok | Expansion Module Flash Load Failure | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 154 | check | Low Suction Pressure Switch Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 155 | take action | Lost CAN Communications to HMI | Unit cannot operate and is shut down. Repair immediately. | Truck, trailer, CR, DAS, DSR |
| 156 | check | Check Suction/Liquid Heat Exchanger Bypass Valve | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 157 | ok | OptiSet Plus Profile Mismatch | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 158 | ok | Primary Software Failed to Load | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 159 | ok | Check Battery Condition | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 160 | ok | Lost CAN Communications to Radio Expansion Board | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 161 | ok | Log DAS Real Time Clock Invalid (DAS) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 163 | check | Emission Control Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 175 | check | Check Electronic Expansion Valve (CR) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 176 | check | Check Evaporator Pressure Sensor (CR) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 177 | check | Check CO 2 Tank Pressure Sensor (CR) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 178 | check | Low CO 2 Fuel Level (CR) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 180 | check | TriPac Compressor Alarm | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 188 | check | Log DAS Microprocessor Fault (DAS) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 203 | check | Check Display Return Air Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 204 | check | Check Display Discharge Air Sensor (Zone) | Manually monitor temperature. Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 216 | ok | Check DAS Digital Inputs (DAS) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 233 | ok | REB Switching Off, Conservative to Full Null | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 234 | ok | Check Relative Humidity Sensor Circuit | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 235 | ok | High Engine Coolant Temperature Check | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 250 | ok | DAS Clock Time Reset (DAS) | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 251 | ok | Check Radio Expansion Board Configuration | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 252 | ok | Check Auto Fresh Air Exchange Circuit | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 253 | ok | REB On Back Up Battery, Alarms Disabled | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 254 | ok | Check Auxiliary Coolant Temp Sensor | Report alarm at end of day. | Truck, trailer, CR, DAS, DSR |
| 500 | check | Check Host Evaporator Blower Low Speed | Not implemented | Precedent 500 Series |
| 501 | check | Check Host Evaporator Blower High Speed | Not implemented | Precedent 500 Series |
| 505 | check | Check Roadside Condenser Fan Motor Speed Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 506 | check | Check Curbside Condenser Fan Motor Speed Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 507 | ok | Check Digital Scroll Output Circuit (Scroll Only) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 508 | ok | Speed Request Communication Error | Report alarm at end of day. | Precedent 500 Series |
| 509 | check | ECU Failed to Enable | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 510 | check | ECU Run Signal Failed | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 511 | ok | Engine Wait to Start Time Delay Expired | Report alarm at end of day. | Precedent 500 Series |
| 512 | check | High Compressor Suction Pressure (Scroll Only) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 513 | check | Low Compressor Suction Ratio (Scroll Only) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 514 | check | Low Compressor Discharge Pressure (Scroll Only) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 515 | check | Minimum ETV Discharge Superheat Temp (Scroll) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 516 | take action | I/O Controller to Application Controller Com Failure | The unit is no longer able to operate and has been shut down. Repair immediately. | Precedent 500 Series |
| 518 | check | Generator Ground Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 519 | check | Check Battery Charger Input Power | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 520 | check | Check Battery Charger Output Power | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 521 | check | Battery Charger External/Environmental Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 522 | check | Battery Temperature Sensor Alarm | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 523 | check | Battery Charger Indicated Conditions | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 524 | check | Generator Op Limit V out to Frequency Ration | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 525 | check | Generator Frequency Range Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 526 | check | Generator Operational Limit Output Current | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 528 | check | Failed J1939 CAN Comm Base Controller/Charger | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 529 | check | Check Fuel Pump Circuit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 530 | check | Low Pressure Differential (Scroll only) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 531 | check | Check Economizer Pressure Sensor (Scroll only) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 538 | check | Engine J1939 CAN Data Link Degraded | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 539 | check | Engine J1939 CAN Data Link Failed | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 540 | check | Illegal Engine Operating State | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 542 | ok | Battery Charger Fault – Unit Forced to Low Speed | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 543 | ok | Battery Charger Internal Short | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 544 | ok | Battery Charger External Short | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 545 | ok | Battery Charger Output Voltage Exceeded Limit | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 546 | ok | Battery Charger Operating Bulk Voltage Out of Range | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 547 | check | AC Bus Phase Loss | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 548 | ok | Battery Charger Temperature Below Operating Range | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 549 | ok | Battery Charger AC Input Overvoltage | Maintenance information only. Report alarm at end of day. | Precedent 500 Series |
| 550 | check | Battery Charger Internal Overvoltage Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 500 Series |
| 551 | ok | Battery Charger Internal Temp Sensor Fault | Precedent 500 Series | |
| 552 | ok | Battery Charger Charging – Low Battery | Precedent 500 Series | |
| 553 | ok | Battery Charger Operating Derated Due to High temp | Precedent 500 Series | |
| 599 | ok | Engine Service Tool Connected | Report alarm at end of day. | Precedent 500 Series |
| 600 | ok | Check Crankshaft Speed Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 601 | ok | Check Camshaft Speed Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 603 | ok | Check Exhaust Pressure Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 604 | ok | Check Coolant Temp Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 605 | ok | Check Fresh Air Temp Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 607 | ok | Check Fuel Temperature Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 608 | ok | Check Rail Pressure Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 609 | ok | Check Intake Pressure Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 610 | ok | Check Atmospheric Pressure Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 611 | ok | Check Glow Plug Circuit | Report alarm at end of day. | Precedent 600 Series, DTC |
| 613 | ok | Check Injectors | Report alarm at end of day. | Precedent 600 Series, DTC |
| 614 | ok | Check High Pressure Fuel Pump | Report alarm at end of day. | Precedent 600 Series, DTC |
| 615 | check | Rail Pressure Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 600 Series, DTC |
| 616 | check | Engine Overspeed | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 600 Series, DTC |
| 617 | check | Internal ECU Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 600 Series, DTC |
| 618 | ok | Check EGR System | Report alarm at end of day. | Precedent 600 Series, DTC |
| 619 | ok | ECU Main Relay Fault | Report alarm at end of day. | Precedent 600 Series, DTC |
| 620 | check | No RPM Detected During Start Attempt | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 600 Series, DTC |
| 623 | ok | TRUCAN Message Timeout | Report alarm at end of day. | Precedent 600 Series, DTC |
| 624 | ok | Check EGR Temperature Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 625 | ok | Check Intake Air Temperature Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 626 | ok | Check Exhaust Temperature Sensor | Report alarm at end of day. | Precedent 600 Series, DTC |
| 642 | ok | ECU Forced Low Speed | Report alarm at end of day. | Precedent 600 Series, DTC |
| 699 | check | Unknown ECU Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 600 Series, DTC |
| 800 | ok | Crankshaft Position Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 801 | ok | Camshaft Position Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 804 | ok | Engine Coolant Temperature Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 807 | ok | Fuel Temperature Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 808 | ok | Rail Pressure Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 809 | ok | Intake Air Pressure Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 810 | ok | Atmospheric Pressure Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 811 | ok | Glow Plug Circuit Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 813 | ok | General Injector Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 815 | check | Fuel Pressure Regulator Error | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 800 Series, DTC |
| 818 | ok | EGR Valve Actuator Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 819 | ok | ECU Power Relay Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 820 | ok | Main ECU Relay Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 825 | ok | T1 Air Intake Temperature Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 826 | ok | T2 Air Intake Temperature Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 827 | ok | EGR Valve Position Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 828 | ok | Lambda System Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 829 | ok | Engine Communication Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 830 | ok | Air Flow Meter Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 832 | ok | Engine Power Supply Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 833 | ok | High Pressure Pump Fuel Metering Unit Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 834 | ok | Water in Fuel Sensor Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 836 | ok | Major ECU Failures | Report alarm at end of day. | Precedent 800 Series, DTC |
| 838 | ok | Intake Air System Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 839 | ok | Engine Speed Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 840 | ok | Fuel Injection Energizing Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 841 | ok | High Pressure Pump Wear | Report alarm at end of day. | Precedent 800 Series, DTC |
| 842 | ok | Engine Running in Safe Mode – Low Speed | Report alarm at end of day. | Precedent 800 Series, DTC |
| 843 | ok | Fuel Injection System Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 844 | ok | Engine Failed to Crank | Report alarm at end of day. | Precedent 800 Series, DTC |
| 845 | ok | Starter Relay Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 846 | ok | T50 Switch Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 847 | ok | Variant Coding Error | Report alarm at end of day. | Precedent 800 Series, DTC |
| 853 | check | Engine Overspeed (No DTC) | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 800 Series, DTC |
| 854 | check | Engine Protection Self Shutdown | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 800 Series, DTC |
| 899 | check | Unknown ECU Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | Precedent 800 Series, DTC |
| P1E | check | Return Air Temperature Sensor Fault | Report alarm at end of day. | DSR |
| P2E | check | Remote Return Air Temperature Sensor Fault | Report alarm at end of day. | DSR |
| OL | take action | Electric Standby Overload | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| bAt | take action | Low Battery Voltage | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| HP | take action | High Discharge Pressure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| LP | take action | Low Suction Pressure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| PSE | take action | High Pressure Sensor Fault | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| tEP | take action | Electric Standby Motor Thermal Protection Alarm | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| tP4 | take action | Power Supply Thermal Protection Alarm | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| dr1 | check | Door 1 Open/Door Switch 1 Failure | Close door. Report alarm at end of day. | DSR |
| dr2 | check | Door 2 Open/Door Switch 2 Failure | Close door. Report alarm at end of day. | DSR |
| tCO | take action | Electronic Control Module Internal Temperature Exceeds Limit | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| SOF | take action | Microprocessor Software Failure | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
| - C - | take action | Communications Failure, Microprocessor to In-Cab Control Box | If unit is shut down repair immediately. Otherwise, report alarm at end of day. | DSR |
Still Have Questions?
Check out our resource index page for brochures, spec sheets, videos, and warranty information; or our operator support page for operator cards and videos.
Greater Grand Rapids
Office Hours: 8:00am – 4:30pm
Parts & Service Hours: Mon-Thur 7:00am – 8:00pm
Fri 7:00am – 4:30pm
Phone: (616) 878-4900
Metro Detroit
Office Hours: 7:00am – 4:30pm
Parts & Service Hours: Mon-Fri 7:00am – 7:00pm
Phone: (313) 532-3006