Cummins Fault Codes List: 2637 (BCL) to 2962
Page 7 of 19 of the full Cummins fault code list (1,847 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.
Cummins codes 2637 (BCL) to 2962
- 2637 (BCL)Aftertreatment Diesel Oxidation Catalyst Face Plugged - Root Cause Not Known
- 2637 ISXAftertreatment Diesel Oxidation Catalyst Face Plugged - Root Cause Not Known
- 2637 (X)Aftertreatment Diesel Oxidation Catalyst face Plugged- Root Cause not Known
- 2638Catalyst Efficiency - Out of Calibration. The temperature increase across the aftertreatment diesel oxidation catalyst is lower than expected.
- 2638 (BCL)Aftertreatment Diesel Oxidation Catalyst Conversion Efficiency - Data Valid But Below Normal Operating Range - Least Severe Level
- 2638 (X)Aftertreatment Diesel Oxidation Catalyst Conversion Efficiency - Data Valid But Below Normal Operating Range - Least Severe Level
- 2639 (BCL)Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level
- 2639 (X)Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level
- 264Fuel Temperature Sensor Error
- 2646Engine Coolant Temperature - Condition Exists. The EGR valve was closed to reduce engine coolant temperature.
- 265Engine Fuel Temperature Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine fuel temperature circuit.
- 2659Engine Coolant Temperature - Condition Exists. The EGR valve was closed to reduce engine coolant temperature.
- 266Engine Fuel Temperature - Data Valid But Above Normal Operating Range - Most Severe Level
- 2661At Least One Unacknowledged Most Severe Fault - Condition Exists
- 2662At Least One Unacknowledged Moderately Severe Fault - Condition Exists
- 267Ambient Air temperature Signal Incorrect
- 268Injector Metering Rail 1 Pressure - Data Erratic, Intermittent, or Incorrect. The ECM has detected that the fuel pressure signal is not changing.
- 269Antitheft Password Valid Indicator — Data Erratic, Intermittent, or Incorrect. Engine ignition attempt without authorization from immobilizer anti-theft device.
- 2692Aftertreatment 1 Diesel Particulate Filter System- Data Erratic, Intermittent, or Incorrect
- 2697Accelerator Pedal or Lever Idle Validation Switch Circuit - Out of Calibration
- 271Fuel Pump Pressurizing Assembly 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the fuel pump actuator circuit.
- 2717Engine Control Module Calibration Program Memory (RAM) Corruption - Condition Exists
- 2718Brake And Throttle Conflict- Condition Exists
- 2719Brake Inactivity - Condition Exists.
- 271 (Auto)High Fuel Pressure Solenoid Valve Circuit - Voltage Below Normal or Shorted to Low Source. Electronic fuel control actuator shorted low.
- 271 BHigh Fuel Pressure Solenoid Valve Circuit - Voltage Below Normal or Shorted to Low Source
- 271 CLHigh Fuel Pressure Solenoid Valve Circuit - Voltage Below Normal or Shorted to Low Source
- 271 (ISC - Auto)High Fuel Pressure Solenoid Valve Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the fuel pump actuator circuit.
- 272(ISC/QSC/ISL/QSL Automotive, Industrial, and Marine Application) High Fuel Pressure Solenoid Valve Circuit - Voltage Above Normal or Shorted to High Source
- 2727SAE J1939 Data Link 2 Engine Network - Abnormal Update Rate
- 2728Aftertreatment Fuel Injector 1 - Data Valid But Above Normal Operational Range - Moderately Severe Level
- 272 (Auto)High Fuel Pressure Solenoid Valve Circuit - Voltage Above Normal or Shorted to High Source. Electronic fuel control actuator shorted high.
- 272 BHigh Fuel Pressure Solenoid Valve Circuit - Voltage Above Normal or Shorted to High Source
- 272 CLHigh Fuel Pressure Solenoid Valve Circuit - Voltage Above Normal or Shorted to High Source
- 272 (ISC - Auto)High Fuel Pressure Solenoid Valve Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at the fuel pump...
- 273Low or no current detected at the rear pumping valve pin 15 of the engine harness
- 2732Aftertreatment Fuel Drain Valve Circuit - Voltage Above Normal or Shorted to High Source
- 2733Aftertreatment Fuel Drain Valve Circuit - Voltage Below Normal or Shorted to Low Source
- 2734Start Enable Device 1 Canister Empty (Ether Injection) - Data Valid But Below Normal Operating Range - Least Severe Level
- 2735Exhaust Gas Temperature Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
- 2736Exhaust Gas Temperature Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source
- 2737Exhaust Gas Temperature - Data Valid but Above Normal Operating Range - Most Severe Level
- 2738Start Enable Device 1 Circuit (Ether Injection) - Voltage Above Normal or Shorted to High Source
- 2739Start Enable Device 1 Circuit (Ether Injection) - Voltage Below Normal or Shorted to Low Source
- 274High current detected at the rear pumping valve pin 15 of the engine harness.
- 2741Aftertreatment Fuel Shutoff Valve 1 Swapped - Condition Exists
- 2742Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Below Normal Operating Range - Least Severe Level
- 2743Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Below Normal Operating Range - Moderately Severe Level
- 275Front Pumping Element. The electronic control module (ECM) has detected a malfunction in the front pumping element.
- 2754Engine Diesel Particulate Filter Intake Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level
- 2754 (BCL)Engine Diesel Particulate Filter Intake Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level
- 2754 (X)Engine Diesel Particulate Filter Intake Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level
- 276High current detected on injection control valve stator return pin 7.
- 2764Exhaust Gas Pressure - Data Valid but Above Normal Operating Range - Moderately Severe Level
- 2765Engine Injector Bank 1 Barcodes - Out of Calibration. Invalid injector barcode information has been entered.
- 277Engine ECM has detected a malfunction in the injection control valve
- 2771Aftertreatment 1 Outlet NOx Sensor - Abnormal Update Rate
- 2772Aftertreatment Outlet NOx - Data Valid But Above Normal Operational Range - Least Severe Level. The engine NOx output is higher than recommended levels.
- 2772 (Air Assisted)Aftertreatment Outlet NOx - Data Valid But Above Normal Operating Range - Least Severe Level
- 2772 (Airless)Aftertreatment Outlet NOx - Data Valid But Above Normal Operating Range- Least Severe Level
- 2773Aftertreatment Outlet NOx - Data Valid but Above Normal Operational Range - Most Severe Level. The engine NOx output is higher than recommended levels.
- 2773 (Air Assisted)Aftertreatment Outlet NOx - Data Valid but Above Normal Operating Range - Most Severe Level
- 2773 (Airless)Aftertreatment Outlet NOx - Data Valid but Above Normal Operating Range - Most Severe Level
- 2774Exhaust Gas Recirculation (EGR) System - Condition Exists. Plugged EGR differential pressure sensor tubes have been detected.
- 2777Particulate Trap Active Regeneration Inhibitied Due to Inhibit Switch - Condition Exists
- 2778Aftertreatment Fuel Drain Valve - Mechanical System Not Responding Properly or Out of Adjustment
- 278Error detected in lift pump circuit at pins 11 and 22 of the engine harness.
- 2789Engine Coolant Temperature - Data Valid But Below Normal Operational Range - Moderately Severe Level
- 279Electronic Fuel Injection Control Valve Circuit - Voltage Below Normal or Shorted to Low Source
- 281Fuel Pump Pressurizing Assembly 1 - Mechanical System Not Responding Properly or Out of Adjustment
- 2813EGR Valve Control - Special Instructions. The EGR valve has been closed during regeneration of the aftertreatment diesel particulate filter.
- 282Engine ECM has detected a failure in the rear pumping element
- 283High voltage detected at main engine speed sensor voltage supply pin 8 of the engine harness
- 284Engine Speed Sensor Supply Voltage Circuit - shorted low. Incorrect voltage detected on the ECM voltage supply line to the engine speed sensor.
- 285The ECM expected information from a multiplexed device but did not receive it soon enough, or did not receive it at all.
- 285 (IND)SAE J1939 Multiplexing PGN Timeout Error - Abnormal Update Rate
- 285 (Industrial)SAE J1939 Multiplexing PGN Timeout Error - Abnormal Update Rate
- 285 (PG)SAE J1939 Multiplexing PGN Timeout Error - Abnormal Update Rate
- 285 (Power Generation)SAE J1939 Multiplexing PGN Timeout Error - Abnormal Update Rate
- 286The ECM expected information from a multiplexed device but only received a portion of the necessary information.
- 287SAE J1939 Multiplexing Accelerator Pedal Sensor Error. The OEM vehicle electronic control unit (VECU) detected a fault with its accelerator pedal.
- 2878Aftertreatment Fuel Drain Valve - Mechanical System Not Responding Properly or Out of Adjustment
- 2878 (ISM)Aftertreatment Fuel Drain Valve - Mechanical System Not Responding Properly or Out of Adjustment
- 2878 (ISX)Aftertreatment Fuel Drain Valve - Mechanical System Not Responding Properly or Out of Adjustment
- 2879 (ISM)Aftertreatment Fuel Drain Valve - Data Erratic, Intermittent, or Incorrect
- 2879 (ISX)Aftertreatment Fuel Drain Valve - Data Erratic, Intermittent, or Incorrect
- 288SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Position Sensor System - Received Network Data In Error.
- 2881Aftertreatment Fuel Pressure Sensor - Data Valid But Below Normal Operational Range - Least Severe Level
- 289Vehicle Accessory Shutdown Driver- Not Identifiable
- 291Proprietary Datalink Error (OEM/Vehicle Datalink) — Abnormal Update Rate. The ECM cannot communicate with the immobilizer anti-theft system.
- 292Auxiliary Temperature Sensor Input 1 - Special Instructions.
- 293Auxiliary Temperature Sensor Input 1 Circuit - Voltage above normal, or shorted to high source
- 294Auxiliary Temperature Sensor Input 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at OEM auxiliary temperature circuit.
- 295Barometric Pressure —Data Erratic, Intermittent, or Incorrect. The barometric air pressure sensor is reading an erratic value at initial key-on.
- 295 (BCL)Barometric Pressure- Data Erratic, Intermittent, or Incorrect
- 295 ISXBarometric Pressure - Data Erratic, Intermittent or Incorrect
- 295 (X)Barometric Pressure- Data Erratic, Intermittent, or Incorrect
- 296OEM pressure signal at pin 48 of the OEM harness indicates pressure outside the engine protection limit
- 2961EGR Temperature - Data Valid But Above Normal Operating Range - Least Severe Level. EGR temperature has exceeded the engine protection limit.
- 2962Exhaust Gas Recirculation Temperature - Data Valid But Above Normal Operational Range - Moderately Severe Level
Fault code lists by brand
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Safety-critical: confirm before use
Safety first: park on level ground, stop the engine, and secure the machine before any inspection. Thresholds, component locations, wire numbers, fuse locations, and reset procedures can vary by model, configuration, and serial number. Confirm them in the service documentation for your exact machine.