Cummins ISX DTC

Cummins ISX Fault Codes DTC

Cummins ISX Codes 111-500



111 Electronic Control Module Critical Internal Failure - Bad Intelligent Device or Component



115 Engine Magnetic Speed/Position Lost Both of Two Signals - Data Erratic, Intermittent, or Incorrect



122 Intake Manifold 1 Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source



123 Intake Manifold 1 Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



125 Intake Manifold 1 Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level



131 Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



132 Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source



133 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



134 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Below Normal, or Shorted to Low Source



135 Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Above Normal, or Shorted to High Source



141 Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



143 Engine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level



144 Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal, or Shorted to High Source



145 Engine Coolant Temperature 1 Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



146 Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level



151 Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Most Severe Level



153 Intake Manifold 1 Temperature Sensor Circuit - Voltage Above Normal, or Shorted to High Source



154 Intake Manifold 1 Temperature Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



155 Intake Manifold 1 Temperature - Data Valid but Above Normal Operational Range - Most Severe Level



187 Sensor Supply 2 Circuit Choice



187ism Sensor Supply 2 Circuit - Voltage Below Normal, or Shorted to Low Source



187isx Sensor Supply 2 Circuit - Voltage Below Normal, or Shorted to Low Source



195 Coolant Level Sensor 1 Circuit Choice



195-2wire Coolant Level Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



195-3wire Coolant Level Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



196 Coolant Level Sensor 1 Circuit Choice



196-2wire Coolant Level Sensor 1 Circuit - Voltage Below Normal, or Shorted to Low Source



196-3wire Coolant Level Sensor 1 Circuit - Voltage Below Normal, or Shorted to Low Source



197 Coolant Level - Data Valid but Below Normal Operational Range - Moderately Severe Level



212 Engine Oil Temperature Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



213 Engine Oil Temperature Sensor 1 Circuit — Voltage Below Normal, or Shorted to Low Source



214 Engine Oil Temperature High - Data Valid but Above Normal Operational Range - Most Severe Level



221 Barometric Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source



222 Barometric Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



227 Sensor Supply 2 Circuit - Voltage Above Normal, or Shorted to High Source



234 Engine Crankshaft Speed/Position - Data Valid but Above Normal Operational Range - Most Severe Level



238 Sensor Supply 3 Circuit - Voltage Below Normal, or Shorted to Low Source



241 Wheel-Based Vehicle Speed - Data Erratic, Intermittent or Incorrect



242 Wheel-Based Vehicle Speed Sensor Circuit Tampering Has Been Detected - Abnormal Rate of Change



245 Fan Control Circuit - Voltage Below Normal or Shorted to Low Source



249 Ambient Air Temperature Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



254 Engine Fuel Shutoff Valve Driver Circuit - Voltage Below Normal, or Shorted to Low Source



255 Engine Fuel Shutoff Valve Driver Circuit - Voltage Above Normal, or Shorted to High Source



256 Ambient Air Temperature Sensor 1 Circuit - Voltage Below Normal, or Shorted to Low Source



257 Engine Fuel shutoff Valve Driver - Mechanical System Not Responding Properly or Out of Adjustment



263 Engine Fuel Temperature Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source



265 Engine Fuel Temperature Sensor 1 Circuit - Voltage Below Normal, or Shorted to Low Source



285 SAE J1939 Multiplexing PGN Timeout Error - Abnormal Update Rate



286 SAE J1939 Multiplexing Configuration Error - Out of Calibration



287 SAE J1939 Multiplexed Accelerator Pedal or Lever Sensor System - Received Network Data In Error



288 SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Position Sensor System - Received Network Data In Error



295 Barometric Pressure - Data Erratic, Intermittent, or Incorrect



311 Injector Solenoid Driver Cylinder 1 Circuit - Current Above Normal, or Grounded Circuit



312 Injector Solenoid Driver Cylinder 5 Circuit - Current Above Normal, or Grounded Circuit



313 Injector Solenoid Driver Cylinder 3 Circuit - Current Above Normal, or Grounded Circuit



314 Injector Solenoid Driver Cylinder 6 Circuit - Current Above Normal, or Grounded Circuit



315 Injector Solenoid Driver Cylinder 2 Circuit - Current Above Normal, or Grounded Circuit



319 Real Time Clock Power Interrupt - Data Erratic, Intermittent, or Incorrect



321 Injector Solenoid Driver Cylinder 4 Circuit - Current Above Normal, or Grounded Circuit



322 Injector Solenoid Driver Cylinder 1 Circuit - Current Below Normal, or Open Circuit



323 Injector Solenoid Driver Cylinder 5 Circuit - Current Below Normal, or Open Circuit



324 Injector Solenoid Driver Cylinder 3 Circuit - Current Below Normal, or Open Circuit



325 Injector Solenoid Driver Cylinder 6 Circuit - Current Below Normal, or Open Circuit



331 Injector Solenoid Driver Cylinder 2 Circuit - Current Below Normal, or Open Circuit



332 Injector Solenoid Driver Cylinder 4 Circuit - Current Below Normal, or Open Circuit



338 Idle Shutdown Vehicle Accessories Relay Driver Circuit - Voltage Above Normal, or Shorted to High Source



339 Idle Shutdown Vehicle Accessories Relay Driver Circuit - Voltage Below Normal, or Shorted to Low Source



343 Engine Control Module Warning Internal Hardware Failure - Bad Intelligent Device or Component



346 Engine Control Module Calibration Memory Software - Bad Intelligent Device or Component



351 Injector Power Supply - Bad Intelligent Device or Component



352 Sensor Supply 1 Circuit - Voltage Below Normal, or Shorted to Low Source



386 Sensor Supply 1 Circuit - Voltage Above Normal, or Shorted to High Source



415 Engine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Most Severe Level



418 Water in Fuel Indicator - Data Valid but Above Normal Operational Range - Least Severe Level



427 SAE J1939 Datalink - Abnormal Update Rate



428 Water-in-Fuel Indicator Sensor Circuit - Voltage Above Normal, or Shorted to High Source



429 Water-in-Fuel Indicator Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



435 Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect



441 Battery 1 Voltage - Data Valid but Below Normal Operational Range - Moderately Severe Level



442 Battery 1 Voltage - Data Valid but Above Normal Operational Range - Moderately Severe Level



Cummins ISX Codes 500-1000



546 Fuel Delivery Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source



547 Fuel Delivery Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



555 Crankcase Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



556 Crankcase Pressure — Data Valid but Above Normal Operational Range — Most Severe Level



584 Starter Relay Driver Circuit - Voltage Above Normal, or Shorted to High Source



585 Starter Relay Driver Circuit - Voltage Below Normal, or Shorted to Low Source



596 Electrical Charging System Voltage - Data Valid but Above Normal Operational Range - Moderately Severe Level



597 Electrical Charging System Voltage - Data Valid but Below Normal Operational Range - Moderately Severe Level



598 Electrical Charging System Voltage - Data Valid but Below Normal Operational Range - Most Severe Level



649 Engine Oil Change Interval - Condition Exists



686 Turbocharger 1 Speed - Data Erratic, Intermittent, or Incorrect



687 Turbocharger 1 Speed - Data Valid but Below Normal Operational Range - Moderately Severe Level



689 Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect



689ism Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect



689isx Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect



691 Turbocharger 1 Compressor Inlet Temperature Sensor Circuit - Voltage Above Normal, or Shorted to High Source



692 Turbocharger 1 Compressor Inlet Temperature Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



697 ECM Internal Temperature Sensor Circuit - Voltage Above Normal, or Shorted to High Source



698 ECM Internal Temperature Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



731 Engine Speed / Position Camshaft and Crankshaft Misalignment - Mechanical System Not Responding Properly or Out of Adjustment



778 Engine Camshaft Speed/Position Sensor Choice



778ism Engine Camshaft Speed/Position Sensor - Data Erratic, Intermittent, or Incorrect



778isx Engine Camshaft Speed/Position Sensor - Data Erratic, Intermittent, or Incorrect



784 Adaptive Cruise Control Mode - Data Erratic, Intermittent, or Incorrect



Cummins ISX Codes 1000-1300



1117 Power Supply Lost With Ignition On - Data Erratic, Intermittent, or Incorrect






1239 Accelerator Pedal or Lever Position Sensor 2 Circuit - Voltage Above Normal, or Shorted to High Source



1241 Accelerator Pedal or Lever Position Sensor 2 Circuit - Voltage Below Normal, or Shorted to Low Source



1242 Accelerator Pedal or Lever Position Sensor 1 and 2 - Data Erratic, Intermittent, or Incorrect



Cummins ISX Codes 1300-1700



1663 Catalyst Inlet Temperature Sensor Swapped with Outlet - Condition Exists



1664 Catalyst Missing - Condition Exists



1665 Aftertreatment Exhaust Gas Temperature 1 Circuit - Voltage Below Normal, or Shorted to Low Source



1666 Aftertreatment Exhaust Gas Temperature 1 Circuit - Voltage Above Normal, or Shorted to High Source



1667 Aftertreatment Exhaust Gas Temperature 1 - Data Erratic, Intermittent, or Incorrect



1674 Aftertreatment Exhaust Gas Temperature 2 Circuit - Voltage Below Normal, or Shorted to Low Source



1675 Aftertreatment Exhaust Gas Temperature 2 Circuit - Voltage Above Normal, or Shorted to High Source



1676 Aftertreatment Exhaust Gas Temperature 2 - Data Erratic, Intermittent, or Incorrect



1691 Catalyst Efficiency - Out of Calibration



1695 Sensor Supply 5 - Voltage Above Normal, or Shorted to High Source



1696 Sensor Supply 5 - Voltage Below Normal, or Shorted to Low Source



Cummins ISX Codes 1700-1900



1843 Crankcase Pressure Circuit - Voltage Above Normal, or Shorted to High Source



1844 Crankcase Pressure Circuit - Voltage Below Normal, or Shorted to Low Source



1866 Exhaust Gas Recirculation Valve Delta Pressure - Data Erratic, Intermittent, or Incorrect



1876 Aftertreatment Exhaust Gas Temperature 3 Circuit - Voltage Above Normal, or Shorted to High Source



1877 Aftertreatment Exhaust Gas Temperature 3 Circuit - Voltage Below Normal, or Shorted to Low Source



1878 Aftertreatment Exhaust Gas Temperature 3 - Data Erratic, Intermittent, or Incorrect



1879 Aftertreatment Particulate Filter Differential Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source



1881 Aftertreatment Particulate Filter Differential Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



1883 Aftertreatment Particulate Filter Differential Pressure Sensor - Data Erratic, Intermittent, or Incorrect



1893 EGR Valve Control Circuit - Abnormal Update Rate



1895 EGR Valve Controller - Bad Intelligent Device or Component



1896 EGR Valve Controller - Out of Calibration



1899 Exhaust Gas Recirculation Valve Delta Pressure - Data Valid but Above Normal Operational Range- Moderately Severe Level



Cummins ISX Codes 1900-2000



1921 Aftertreatment Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



1922 Aftertreatment Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Most Severe Level



1923 Aftertreatment Fuel shutoff Valve 1 Circuit - Voltage Above Normal, or Shorted to High Source



1924 Aftertreatment Fuel Shutoff Valve 1 Circuit - Voltage Below Normal, or Shorted to Low Source



1925 Aftertreatment Fuel Shutoff Valve 1 - Data Erratic, Intermittent, or Incorrect



1926 Aftertreatment Fuel Pressure Sensor - Data Erratic, Intermittent, or Incorrect



1927 Aftertreatment Fuel Pressure Sensor - Voltage Above Normal, or Shorted to High Source



1928 Aftertreatment Fuel Pressure Sensor - Voltage Below Normal, or Shorted to Low Source



1932 Aftertreatment Fuel Injector 1 - Data Erratic, Intermittent, or Incorrect



1933 ECU Power Output Supply Voltage 2 - Data Valid but Above Normal Operational Range - Moderately Severe Level



1934 ECU Power Output Supply Voltage 2 - Data Valid but Below Normal Operational Range - Moderately Severe Level



1935 EGR Actuator Driver Circuit - Root Cause Not Known



1938 ECU Power Output Supply Voltage 1 - Data Valid but Below Normal Operational Range - Moderately Severe Level



1942 Crankcase Pressure - Data Erratic, Intermittent, or Incorrect



1943 Ambient Air Density - Data Valid but Below Normal Operational Range - Least Severe Level



1961 EGR Valve Control Circuit Calculated Over Temperature - Data Valid but Above Normal Operational Range - Least Severe Level



1962 VGT Actuator Driver Over Temperature (Calculated - Data Valid but Above Normal Operational Range - Least Severe Level



1963 Aftertreatment Fuel Shutoff Valve 1 - Mechanical System Not Responding Properly or Out of Adjustment



1966 Aftertreatment Exhaust Gas Temperature 1 - Data Valid but Above Normal Operational Range - Most Severe Level



1968 Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Above Normal Operational Range - Moderately Severe Level



1969 Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Above Normal Operational Range - Most Severe Level



1972 Aftertreatment Exhaust Gas Temperature 3 - Data Valid but Above Normal Operational Range - Moderately Severe Level



1973 Aftertreatment Exhaust Gas Temperature 3 - Data Valid but Above Normal Operational Range - Most Severe Level



1974 Crankcase Pressure - Data Valid but Above Normal Operational Range - Least Severe Level



1977 Aftertreatment Fuel Injector 1 Circuit - Current Below Normal, or Open Circuit



1981 Aftertreatment Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Least Severe Level



1993 Aftertreatment Particulate Filter Missing - Condition Exists



Cummins ISX Codes 2000-2200



2182 Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal, or Shorted to High Source



2183 Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal, or Shorted to Low Source



2185 Sensor Supply 4 Circuit — Voltage Above Normal, or Shorted to High Source



2186 Sensor Supply 4 Circuit - Voltage Below Normal, or Shorted to Low Source



2195 Auxiliary Equipment Sensor Input 3 Engine Protection Critical - Special Instructions



2198 VGT Actuator Driver Circuit - Root Cause Not Known



Cummins ISX Codes 2200-2400



2215 Fuel Pump Delivery Pressure — Data Valid but Below Normal Operational Range — Moderately Severe Level



2216 Fuel Pump Delivery Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2272 EGR Valve Position Circuit - Voltage Below Normal, or Shorted to Low Source



2273 Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source



2274 Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



2288 Turbocharger 1 Speed - Data Valid but Above Normal Operational Range - Least Severe Level



2311 Electronic Fuel Injection Control Valve Circuit — Condition Exists



2312 Timing Actuator Driver Circuit - Condition Exists



2313 Fuel Control Valve Solenoid Driver 2 Circuit - Condition Exists



2314 Engine Timing Actuator Driver 2 Circuit Error - Condition Exists



2321 Engine Crankshaft Speed/Position — Data Erratic, Intermittent, or Incorrect



2322 Engine Camshaft Speed/Position Sensor — Data Erratic, Intermittent, or Incorrect



2345 Turbocharger 1 Speed - Abnormal Rate of Change



2346 Turbocharger Turbine Inlet Temperature (Calculated - Data Valid but Above Normal Operational Range - Least Severe Level)



2347 Turbocharger Compressor Outlet Temperature (Calculated - Data Valid but Above Normal Operational Range - Least Severe Level)



2349 EGR Valve Control Circuit - Current Below Normal, or Open Circuit



2351 EGR Valve Control Circuit - Voltage Below Normal, or Shorted to Low Source



2357 EGR Valve Control Circuit - Mechanical System Not Responding Properly or Out of Adjustment



2359 Exhaust Gas Recirculation Valve Delta Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2363 Engine Brake Actuator Driver Output 2 Circuit Choice



2363ism Engine Brake Actuator Driver Output 2 Circuit - Voltage Below Normal, or Shorted to Low Source



2363isx Engine Brake Actuator Driver Output 2 Circuit - Voltage Below Normal, or Shorted to Low Source



2365 Engine Brake Actuator Driver Output 3 Circuit - Voltage Below Normal, or Shorted to Low Source



2367 Engine Brake Actuator Driver Output 2 Circuit Choice



2367ism Engine Brake Actuator Driver Output 2 Circuit - Voltage Above Normal, or Shorted to High Source



2367isx Engine Brake Actuator Driver Output 2 Circuit - Voltage Above Normal, or Shorted to High Source



2368 Engine Brake Actuator Driver Output 3 Circuit - Voltage Above Normal, or Shorted to High Source



2372 Fuel Filter Differential Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2373 Exhaust Gas Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source



2374 Exhaust Gas Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



2375 Exhaust Gas Recirculation Temperature Sensor Circuit - Voltage Above Normal, or Shorted to High Source



2376 Exhaust Gas Recirculation Temperature Sensor Circuit - Voltage Below Normal, or Shorted to Low Source



2377 Fan Control Circuit — Voltage Above Normal, or Shorted to High Source



2387 VGT Actuator Driver Circuit (Motor - Mechanical System Not Responding Properly, or Out of Adjustment



Cummins ISX Codes 2400-2600



2412 Fan Speed - Data Erratic, Intermittent, or Incorrect



2448 Coolant Level - Data Valid but Below Normal Operational Range - Least Severe Level



2449 VGT Actuator Controller - Out of Calibration



2451 Turbocharger Turbine Inlet Temperature (Calculated - Data Valid but Above Normal Operational Range - Moderately Severe Level



2551 Injector Metering Rail 2 Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2552 Injector Metering Rail 1 Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2554 Exhaust Gas Pressure - Data Erratic, Intermittent, or Incorrect



Cummins ISX Codes 2600-2800



2634 VGT Actuator Controller - Bad Intelligent Device or Component



2635 VGT Actuator Driver Circuit - Condition Exists



2636 VGT Actuator Driver Circuit - Abnormal Update Rate



2637 Catalyst Face Plugged - Root Cause Not Known



2638 Catalyst Efficiency - Out of Calibration



2639 Aftertreatment Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Least Severe Level



2646 Engine Coolant Temperature - Condition Exists



2659 Engine Coolant Temperature - Condition Exists



2728 Aftertreatment Fuel Injector 1 - Data Valid but Above Normal Operational Range - Moderately Severe Level



2732 Aftertreatment Fuel Drain Valve Circuit - Voltage Above Normal or Shorted to High Source



2733 Aftertreatment Fuel Drain Valve Circuit - Voltage Below Normal or Shorted to Low Source



2738 Start Enable Device 1 Circuit (Ether Injection - Voltage Above Normal or Shorted to High Source



2739 Start Enable Device 1 Circuit (Ether Injection - Voltage Below Normal or Shorted to Low Source



2741 Aftertreatment Fuel Shutoff Valve 1 Swapped - Condition Exists



2742 Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Below Normal Operational Range - Least Severe Level



2743 Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Below Normal Operational Range - Moderately Severe Level



2754 Engine Particulate Filter Inlet Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2764 Exhaust Gas Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level



2774 Engine Exhaust Gas Recirculation (EGR System - Condition Exists



2777 Particulate Trap Active Regeneration Inhibited Due to Inhibit Switch - Condition Exists



2789 Engine Coolant Temperature - Data Valid but Below Normal Operational Range - Moderately Severe Level



Cummins ISX Codes 2800-3000



2813 EGR Valve Control - Special Instructions



2878 Aftertreatment Fuel Drain Valve - Mechanical System Not Responding Properly or Out of Adjustment



2879 Aftertreatment Fuel Drain Valve - Data Erratic, Intermittent, or Incorrect



2881 Aftertreatment Fuel Pressure Sensor - Data Valid but Below Normal Operational Range - Least Severe Level



2961 Exhaust Gas Recirculation Temperature - Data Valid but Above Normal Operational Range - Least Severe Level



2962 Exhaust Gas Recirculation Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level



2963 Engine Coolant Temperature — Data Valid but Above Normal Operational Range — Least Severe Level



2964 Intake Manifold 1 Temperature — Data Valid but Above Normal Operational Range — Least Severe Level



2973 Intake Manifold 1 Pressure - Data Erratic, Intermittent, or Incorrect