Electronic Control System Signature, ISX and QSX15 Engines – Electronic Control System Signature, ISX and QSX15 Engines – Troubleshooting and Repair Manual

Information Fault Codes

NOTE: – Information fault codes have simple, corrective actions and no fault code troubleshooting tree.
– SRT 00-394 applies to all of the information fault codes listed below.
– After correcting the condition that caused the fault, let the engine warm up; then let the engine run for 1 minute to inactivate the fault code. Then, use INSITE™ to clear the fault code.

CODE: 143
LAMP: Yellow
REASON: Oil pressure signal indicates oil pressure is below the low oil pressure engine protection limit.
EFFECT: Progressive power and speed derate with increasing time after alert. If Engine Protection Shutdown feature is enabled, engine will shut down 30 seconds after the red lamp starts flashing.
ACTION: Refer to the Low Oil Pressure symptom troubleshooting procedure in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 151
LAMP: Red
REASON: Coolant temperature signal indicates temperature is above 104°C [220°F].
EFFECT: Progressive power derate with increasing time after alert. If Engine Protection Shutdown feature is enabled, engine will shut down 30 seconds after the red lamp starts flashing.
ACTION: Refer to the High Coolant Temperature symptom troubleshooting procedure in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 155
LAMP: Red
REASON: Intake manifold temperature signal indicates temperature is above 93.3°C [200°F].
EFFECT: Progressive power derate with increasing time after alert. If Engine Protection Shutdown feature is enabled, engine will shut down 30 seconds after the red lamp starts flashing.
ACTION: Refer to the High Intake Manifold Temperature symptom troubleshooting procedure in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 211
LAMP: None
REASON: Additional OEM or vehicle diagnostic codes have been logged. Check other ECMs for diagnostic codes.
EFFECT: None on engine performance.
ACTION: Refer to the appropriate OEM manual for assistance in troubleshooting this fault.
CODE: 214
LAMP: Red
REASON: Oil temperature signal indicates oil temperature above 123.9°C [255°F].
EFFECT: Progressive power derate with increasing time after alert. If Engine Protection Shutdown feature is enabled, engine will shut down 30 seconds after the red lamp starts flashing.
ACTION: Refer to the High Oil Temperature symptom troubleshooting procedure in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 219
LAMP: Maintenance
REASON: Low oil level was detected in the Centinel™ makeup oil tank.
EFFECT: None on performance. Centinel™ system deactivated.
ACTION: Add engine oil to the Centinel™ makeup oil tank. If fault remains active with a full oil tank, remove and clean the oil level sensor.
CODE: 287
LAMP: Red
REASON: The OEM vehicle electronic control unit (VECU) detected a fault with its throttle pedal.
EFFECT: The engine will only idle.
ACTION: Refer to the OEM troubleshooting and repair manual. Troubleshoot the accelerator pedal connected to the OEM-supplied vehicle electronic control unit (VECU).
CODE: 288
LAMP: Red
REASON: The OEM vehicle electronic control unit (VECU) detected a fault with its remote throttle.
EFFECT: The engine will NOT respond to the remote throttle.
ACTION: Refer to the OEM troubleshooting and repair manual. Troubleshoot the remote throttle pedal connected to the OEM-supplied vehicle electronic control unit (VECU).
CODE: 295
LAMP: Yellow
REASON: An error in the ambient air pressure sensor signal was detected by the ECM.
EFFECT: Engine is derated to no-air setting.
ACTION: Verify ambient air pressure value is from 635.0 mm Hg [25.0 in Hg] to 774.7 mm Hg [30.5 in Hg] using INSITE™. Replace ambient air pressure sensor if necessary.
CODE: 299
LAMP: Yellow
REASON: The engine was shut down by a device other than the keyswitch before proper engine cooldown, resulting in a filtered load factor above the maximum shutdown threshold.
EFFECT: No action taken by the ECM.
ACTION: 
CODE: 415
LAMP: Red
REASON: Oil pressure signal indicates oil pressure below the very low oil pressure engine protection limit.
EFFECT: Progressive power derate with increasing time after alert. If Engine Protection Shutdown feature is enabled, engine will shut down 30 seconds after the red lamp starts flashing.
ACTION: Refer to the Low Oil Pressure symptom troubleshooting procedure in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 418
LAMP: Maintenance
REASON: Water has been detected in the fuel filter.
EFFECT: Possible white smoke, loss of power, or hard starting.
ACTION: Drain water from fuel filter. Refer to the Water in Fuel symptom troubleshooting procedure in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239, if fault reoccurs frequently.
CODE: 419
LAMP: Yellow
REASON: An error in the intake manifold pressure sensor signal was detected by the ECM.
EFFECT: Engine is derated to no-air setting.
ACTION: Verify intake manifold pressure value is from -63.5 mm Hg [-2.5 in Hg] to 63.5 mm Hg [2.5 in Hg] using INSITE™. Replace intake manifold pressure/temperature sensor if necessary.
CODE: 435
LAMP: Yellow
REASON: An error in the oil pressure sensor signal was detected by the ECM.
EFFECT: None on performance. No engine protection for oil pressure.
ACTION: Verify oil pressure value is from 10.3 kPa [-1.5 psi] to 27.5 kPa [4.0 psi] when the engine is stopped using INSITE™. Replace oil pressure/temperature sensor if necessary.
CODE: 471
LAMP: Yellow
REASON: Low crankcase oil level was detected by the ECM.
EFFECT: None on performance. Centinel™ system is deactivated.
ACTION: 
CODE: 595
LAMP: Yellow
REASON: Turbocharger overspeed protection fault. High turbocharger speed has been detected by the ECM.
EFFECT: The engine will run derated.
ACTION: Refer to the High Turbocharger Speed symptom troubleshooting procedure in the Signature Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 611
LAMP: None
REASON: Engine shutdown by operator before the proper engine cooldown.
EFFECT: No action taken by the ECM.
ACTION: Refer to the Hot Shutdown symptom troubleshooting procedures.
CODE: 775
LAMP: Maintenance
REASON: A slow leak has been detected in the air system.
EFFECT: None on performance.
ACTION: Check the vehicle air system for leaks. Refer to Procedure 012-019 in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 776
LAMP: Yellow
REASON: A fast leak has been detected in the air system.
EFFECT: None on performance.
ACTION: Check the vehicle air system for leaks. Refer to Section 012-019 in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
CODE: 951
LAMP: None
REASON: A power imbalance between cylinders was detected by the ECM.
EFFECT: Engine can have rough idle or misfire.
ACTION: Check fuel quality. Check for air being ingested into the fuel. It is normal to have an inactive Fault Code 951 after a service procedure introduced air into the fuel system, such as a filter change. Perform Cylinder Performance Test to determine if a particular cylinder or bank of cylinders is high or low on power. Refer to Procedure 014-008, Cylinder Performance Test, in the Signature, ISX and QSX15 Engines Troubleshooting and Repair Manual, Bulletin No. 3666239.
Last Modified:  06-Nov-2003