Engine error codes list

Fault code No.

Reason

Effect (only when fault code is active)

111

ECM internal hardware error.

Possible no effect or engine may run rough or not start.

115

No engine speed or pposition signal detected at pin 17 of the engine harness.

Engine power derate Possible white smoke

121

No engine speed or position signal detected at pin 9 of the engine harness

No engine speed and position backup for main speed position sensor.

122

High voltage detected at the boost pressure sensor signal pin 45 of the engine harness.

Engine will derate to no-boost fueling.

123

Low voltage detected at boost pressure sensor signal pin 45 of the engine harness.

Engine will derate to no-boost fueing

131

High voltage detected at throttle position signal pin 30 of the machine harness

Engine idles when idle validation switch indicates and ramps up to a default set speed when and ramps up to a default set speed when  the idle validation switch indicates off-idle.

132

Low voltage detected at throttle position signal pin 30 of the machine harness

Engine idles when idle validation switch indicates idle and ramps up to a default set speed when the idle validation switch indicates off-idle

133

High voltage detected at remote throttle position signal pin 9 of the machine harness

Engne will not respond to remote throttle input

134

Low voltage detected at remote throttle position signal pin 9 of the machine harness

Engine will not respond to remote throttle input

135

High voltage detected at oil pressure signal pin 33 of the engine harness

Default value used for oil pressure. No engine protecton for oil pressure

141

Low voltage detected at oil pressure signal pin 33 of the engine harness

Default value used for oil pressure. No engine protection lor oil pressure.

143

Oil pressure signal indicates oil pressure below the low engine protection limit

Power and/or speed derate and possible engine shutdown if engine protection shutdown feature is enabled.

144

High voltage detected at coolant temperature signal pin 23 of the engine harness.

Default value used for coolant temperature No engine protection for coolant temperature.

145

Low voltage detected at coolant temperature Signal pin 23 of the engine harness.

Default value used for coolant temperature No engine protection for coolant temperature.

146

Coolant temperature signal indicates coolant temperature has exceeded the minimum engine protection limit

Power derate and possible engine shutdown feature is enabled.

151

Coolant temperature signal indicates coolant temperature has exceeded the maximum engine  protection limit

Speed derate and possible engine shutdown if engine protection shutdown feature is enabled

153

High voltage detected at intake manifold temperature signal pin 34 of the engine harness.

Default value used for intake manfold temperature No engne protection for intake manfold temperature

154

Low voltage detected at intake manifold temperature   signal pin 34 of the engine harness.

Default value used for intake manifold temperature No engne protection for intake manifold temperature

155

Intake manfold air temperature signal indicates intake manifold air temperature is above the maximum engine protection Limit

Speed derate and possible engine shutdown if engne protection shutdown feature is enabled.

191

Air conditioner clutch driver signal indicates a short to ground when commanded on.

Air conditioner clutch will not operate

211

Machine specific fault code has occurred.

No effect on engine performance.

221

High voltage detected at ambient air pressure signal pin 32 of the engine harness.

Engine power derate.

234

Engine speed signal indicates engine speed has exceeded the overspeed limit

Fuel to injectors disabled until engine speed falls below the overspeed limit

235

Coolant level signal at pin 37 of the engine harness indicates coolant level is low

Power and/or speed derate and possible engine shutdown if engine protection shutdown feature is enabled.

Fault code No

REASON

Effect (only when fault code is active) 

241

Vehicle speed signal on pins 8 and 18 of the machine harness has been lost

Engine speed limited to "Max. Engine Speed without VSS" Cruise control, gear-down protection and the road speed governor will not work. Trip information data that is based on mileage will be incorrect

242

Possible tampering has been detected on the vehicle speed circuit pins 8 and 18 of the   machine harness

Engine speed limited to "Max. Engine Speed without VSS". Cruise control, gear-down protection and the road speed governor will not work. Trip information data that is based on mileage will be incorrect.

243

Error detected in the exhaust brake relay enable circuit at pin 42 of the engine harness

Exhaust brake will not work

245

Error detected in fan clutch relay enable circuit at pin 41 of the engine harness.

Electronic control; module (ECM) can not control the engine cooling fan. Fan will remain on or off

263

High voltage detected at the fuel temperature sensor signal pin 35 of the engine harness.

Default value used tor fuel temperature. Possible low power.

261

Fuel pump control module indicates the fuel temperature has exceeded the pump protection limit.

Power derate

264

High or low voltage detected at the fuel temperature   sensor signal circuit inside the pump controller.

Default value used for fuel temperature Possible low power.

283

High voltage detected at main engine speed position sensor voltage supply pin 8 of the engine harness

ECM will use the engine position signal as a backup. Possible white smoke and power loss

284

Low voltage detected at man engine speed/ position   sensor voltage supply pin 8 of the engine harness.

ECM will use the engine position signal as a backup  Possible white smoke and power loss

285

The ECM expected information from a multiplexed device but did not receive it soon enough or did not receive it at all.

At least one multiplexed device will not operate property.

286

The ECM expected info from a multiplexed device but only received a portion of the necessary information

Al least one multiplexed device will not operate property.

287

The machine vehicle electronic control unit (VECU) detected a fault with its throttle pedal

The engine will only idle.

288

The machine vehicle electronic control unit (VECU) detected a fault with its remote throttle

The engine will not respond to the remote throttle.

297

High voltage detected at machine pressure signal pin 48 of the machine harness.

Default value used for machine pressure. Lose ability to control machine pressure.

298

Low voltage detected at machine pressure signal pin 48 of the machine harness.

Default value used for machine pressure. Lose ability to control machine pressure

299

Engine shutdown by device other than key switch before proper engine cool down resulting in filtered load factor above maximum shutdown threshold

No Acton taken by the ECM

319

Power to the real time dock has been interrupted and its setting is no longer valid

Time stamp in ECM power down data will be incorrect.

349

Auxiliary speed signal frequency indicates the frequency is above a calibrated threshold value

Engine will go to idle and lose ability to control speed of the auxiliary device

352

Low voltage detected at engine position sensor +5 VDC supply, pin 10 of the engine harness

Default value used for sensors connected to this +5 VDC supply. Engine will derate to no-boost fueling and loss of engine protection for oil pressure, intake manifold pressure, and ambient air pressure

Fault code No

Reason 

Effect (only when fault code is active) 

361

High current detected at the fuel pump control valve.

Fueling to the injectors disabled and engine is shut down

362

Low or no voltage detected at the fuel pump control valve.

Engine will lose power and may shutdown.

363

No fuel control valve movement detected by the fuel pump control. 

Engine power loss. 

364

No communications or invalid data transfer rate detected on data link between ECM and fuel pump controller at pins 4 and 13 of the engine harness.

Engine will run at a backup mode set speed when throttle is off-idle.

365

Low voltage detected at fuel pump controller supply voltage circuit.

Engine may lose power and may shut down

366

Fuel pump controller battery voltage measurement is outside the range between 6 and 24 VDC.

Engine will lose power and may shut down.

367

Fuel pump speed/position sensor signal lost.

Fueling to injectors disabled and engine will shut down.

368

The fuel pump controller can not achieve the timing value being commanded by the engine ECM

Significant engine power loss.

369

Fuel pump controller does not detect engine position pulse at pin 7 of the engine harness

Significant engine power loss. Possible White smoke

372

Fuel pump controller detects continuous voltage at idle select pin 16 of the engine harness or fuel pump controller detects and open circuit or short circuit to ground at idle select pin 16 of the engine harness.

If communication is lost between the ECM and fuel pump controller, engine will only operate at a speed slightly higher than idle, regardless of throttle position.

373

High voltage detected at fuel shut off signal pin 6 of the engine harness

Fueling to injectors is disabled and engine wil shutdown

374

Fuel pump controller has detected an internal error.

Response will vary from some power loss to the engine shutting down.

375

Engine ECM 6 commanding a fueling or timing value that the pump can not achieve.

Possible no effect or engine may exhibit some power loss

376

No calibration in the fuel pump controller.

Fueling to injectors disabled and engine will shut down

377

Fuel pump controller is not powering down when key switch power is removed from the ECM.

Equipment batteries may be drained low during long shutdown periods

381

Error detected in cold start aid relay 1 enable circuit at pin 41 of the machine harness

Intake air heater can not be fully energized by the ECM.  Possble white smoke and/or hard starting

382

Error detected in cold start aid relay 2 enable circuit at pin 31 of the machine harness

Intake air heater can not be fully energized by the ECM.  Possible white smoke and/or hard starting.

385

High voltage detected at machine harness sensor   +5 VDC supply pin 10 of the machne harness.

Sensors connected to this +5 VDC supply (i.e. remote throttle position sensor) wil not function.

386

High voltage detected at the engine harness sensor +5 VDC supply pin 10 of the engine harness

Default value used for sensors connected to ths +5 volts supply. Engine will derate to no-boost fueling and loss of engine protection for oil pressure, intake manifold temperature, and coolant temperature.

387

High voltage detected at the throttle position sensor +5 VDC supply pin 29 of the machine harness.

Engine idles when idle validation switch indicates idle and ramps up to a default set speed when idle validation switch indicates off-idle.

391

Error detected in power supply relay enable circuit at pin 43 of the engine harness

Possible no effect on performance or engine may not run.

Fault code No

  Reason

Effect (only when fault code is active)

415

Oil pressure signal indicates oil pressure elow the very low engine protection Iimit

Speed derate and possible engine shutdown if engine protection shutdown feature is enabled

418

Water-in-fuel signal indicates the water in the fuel filter needs to be drained

Excessive water in the fuel can lead to severe fuel sysm damage

422

Voltage detected simultaneously on both the coolant level high and low signal pins 27 and 37 of the engine harness or no voltage detected on other pin. (Fault is active for switch type coolant level sensors only)

No engine protection for coolant level

429

Low voltage detected at water-in-fuel signal pin 40 of the machine harness.

No water-in-fuel protection

431

Idle validation signals on pins 25 and 26 of the machine harness indicate voltage detected simultaneously on both pins or no voltage detected on either pin.

No effect on performance, but toss of idle validation

432

Idle validation signal at pin 26 of the machine harness indicates the throttle is at the idle position when the throttle position signal at pin 30 of the machine harness indicates the throttle is not at the idle position ..OR... idle validation signal at pin 26 of the machine harness indicates the throttle is not at the idle position when the throttle position signal at pin 30 of the machine harness indicates the throttle is at the idle position.

Engine will only idle.

433

Boost pressure signal indicates boost pressure is high when other engine parameters (i.e. speed and load) indicate boost pressure should be low ...OR... boost pressure is low when other engine parameters indicate it should be high.

Possible overfueling during acceleration Increase in black smoke

434

All data gathered by the ECM since the last key on (i.e. faults. trip information data,  etc) was not stored to permanent memory at the last key off.

None on performance. Fault code table, trip information data, maintenance monitor data, trending data and user activated datalogger data may be inaccurate.

441

Voltage detected at ECM power supply pins 38. 39, 40 and 50 of the engine harness indicates the ECM supply voltage fell below 6 VDC.

Engine will die or run rough

442

Voltage detected at ECM power supply pins 38, 39, 40 and 50 of the engine harness indicates the ECM supply voltage is above the maximum system voltage level.

None on performance

443

Low voltage detected at throttle position sensor +5 VDC supply pin 29 of the machine harness.

Engine idles when idle validation switch indicates idle and ramps up to a default set speed when idle validation switch indicates off-idle.

444

Low voltage detected at machine harness sensor +5 VDC supply pin 10 of the machine harness

Sensors connected to this +5 VDC supply (i.e. remote throttle position sensor) will not function

488

Intake manfold temperature signal indicates intake manifold temperature is above the minimum engine protection limit.

Power derate and possible engine shutdown if engine protecton shutdown feature is enabled

489

Auxiliary device speed signal on pins 8 and 18 of the OEM harness is out of range of the ECM threshold.

Lose ability to control the speed of the auxiliary device.

515

High voltage detected at the auxiliary +5 VDC sensor supply voltage pin 49 of the engine harness

Auxiliary device will not function

516

Low voltage doteded at the auxiliary *5 VDC sensor supply voltage pn 49 of the engine harness

Auxiliary device will not function

Fault code No

517

A mechanically stuck fuel control valve has been detected by the fuel pump controller.

Engine may shut down

524

Error detected on the high speed governor droop selection switch in put pin 24 of the engine harness

Operator can not select alternate high speed governor droop. Normal droop is used

527

Error detected in the dual output driver "A" circuit pin 5 of the machine harness.

The device being controlled by the dual output driver "A" signal will not function properly.

528

Error detected on the torque curve selection switch input pin 39 of the machine harness.

Operator can not select alternate torque curves. Normal torque curve is used

529

Error detected in the dual output driver "B" circuit pin 1 of the engine harness.

The device being controlled by the dual output driver "B" signal will not function property.

551

Idle validation signals on pins 25 and 26 of the machine harness indicate voltage detected simultaneously on both pins.

Engine will only idle.

599

Software has initiated an engine shutdown based on machine sensor inputs

Engine wil shutdown.

611

ECM detected the engine has initiated a protection shutdown or has been keyed off while above a specified load limit.

No effect

768

Error detected in the output device driver (VGT or transmission shift modulation signal) signal pin 21 of the machine harness.

Can not control the VGT or transmission, depending on application.