CAT Engine Fault Codes List: SPN 1797 FMI 4 to SPN 3483 FMI 11
Page 9 of 12 of the full CAT Engine fault code list (1,341 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.
CAT Engine codes SPN 1797 FMI 4 to SPN 3483 FMI 11
- SPN 1797 FMI 4Engine Injector Metering Rail #1 Pressure : Voltage Below Normal
- SPN 190 FMIEngine Speed : High - most severe
- SPN 190 FMI 16Engine Overspeed - moderate severity
- SPN 190 FMI 8Engine Speed : Abnormal Frequency, Pulse Width, or Period
- SPN 2344 FMI 15High Left Exhaust Temperature - least severe
- SPN 2433High Right Exhaust Temperature - most severe
- SPN 2433 FMI 15High Right Exhaust Temperature - least severe
- SPN 2433 FMI 16High Right Exhaust Temperature - moderate severity
- SPN 2434High Left Exhaust Temperature - most severe
- SPN 2434 FMI 16High Left Exhaust Temperature - moderate severity
- SPN 247 FMI 13Engine Total Hours of Operation : Out of Calibration
- SPN 2630-1Low Engine Charge Air Cooler #1 Outlet Temperature
- SPN 2630 FMI 1Engine Charge Air Cooler Outlet Temperature : Low - most severe
- SPN 2630 FMI 3Engine Charge Air Cooler Outlet Temperature : Voltage Above Normal
- SPN 2630 FMI 4Engine Charge Air Cooler Outlet Temperature : Voltage Below Normal
- SPN 2659 FMI 15Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : High - least severe
- SPN 2659 FMI 16Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : High - moderate severity
- SPN 2659 FMI 17Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : Low - least severe
- SPN 2659 FMI 7Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : Not Responding Properly
- SPN 2791 FMI 5Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Below Normal
- SPN 2791 FMI 6Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Above Normal
- SPN 2791 FMI 7Engine Exhaust Gas Recirculation (EGR) Valve Control : Not Responding Properly
- SPN 2797 FMI 6Engine Injector Group 1 : Current Above Normal
- SPN 2797 FMI 7Engine Injector Group 1 : Not Responding Properly
- SPN 2798 FMI 6Engine Injector Group 2 : Current Above Normal
- SPN 27 FMI 2Accelerator Pedal Position 2 : Erratic, Intermittent, or Incorrect
- SPN 27 FMI 3Engine Exhaust Gas Recirculation Valve Position Sensor : Voltage Above Normal
- SPN 27 FMI 4Engine Exhaust Gas Recirculation Valve Position Sensor : Voltage Below Normal
- SPN 2840 FMI 12ECU Instance : Failure
- SPN 2840 FMI 14ECU Instance : Special Instruction
- SPN 2880 FMI 2Engine Operator Primary Intermediate Speed Select : Erratic, Intermittent, or Incorrect
- SPN 2880 FMI 3Engine Operator Primary Intermediate Speed Select : Voltage Above Normal
- SPN 2880 FMI 4Engine Operator Primary Intermediate Speed Select : Voltage Below Normal
- SPN 2882 FMI 2Engine Alternate Rating Select : Erratic, Intermittent, or Incorrect
- SPN 289 FMI 13Fuel Pressure Sensor - Before Fuel Filter : Out of Calibration
- SPN 2948 FMI 17Low Intake Valve Actuation Pressure
- SPN 2948 FMI 7Intake Valve Actuation System Oil Pressure #1 Not Responding to Command
- SPN 2970 FMI 2Accelerator Pedal 2 Low Idle Switch : Erratic, Intermittent, or Incorrect
- SPN 29 FMI 2Accelerator Pedal Position 2 : Erratic, Intermittent, or Incorrect (Engines Equipped with a Throttle Switch)
- SPN 29 FMI 3Accelerator Pedal Position 2 : Voltage Above Normal (Engines Equipped with an Analog Tthrottle)
- SPN 29 FMI 4Accelerator Pedal Position 2 : Voltage Below Normal (Engines Equipped with an Analog Throttle)
- SPN 29 FMI 8Accelerator Pedal Position 2 : Abnormal Frequency, Pulse Width or Period
- SPN 3031 FMI 16Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : High - moderate severity (2)
- SPN 3031 FMI 18Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : Low - moderate severity (2)
- SPN 3031 FMI 7Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : Not Responding Properly
- SPN 3216 FMI 7Aftertreatment #1 Intake NOx : Not Responding Properly
- SPN 3217 FMI 12Aftertreatment #1 Intake O2 : Failure
- SPN 3217 FMI 13Aftertreatment #1 Intake O2 : Out of Calibration
- SPN 3217 FMI 15Aftertreatment #1 Intake O2 : High - least severe (1)
- SPN 3217 FMI 16Aftertreatment #1 Intake O2 : High - moderate severity (2)
- SPN 3217 FMI 3Aftertreatment #1 Intake O2 : Voltage Above Normal
- SPN 3217 FMI 4Aftertreatment #1 Intake O2 : Voltage Below Normal
- SPN 3217 FMI 5Aftertreatment #1 Intake O2 : Current Below Normal
- SPN 3217 FMI 6Aftertreatment #1 Intake O2 : Current Above Normal
- SPN 3219 FMI 15Aftertreatment #1 Intake Gas Sensor at Temperature : High - least severe (1)
- SPN 3219 FMI 17Aftertreatment #1 Intake Gas Sensor at Temperature : Low - least severe (1)
- SPN 3222 FMI 3Aftertreatment #1 Intake Gas Sensor Heater : Voltage Above Normal
- SPN 3222 FMI 4Aftertreatment #1 Intake Gas Sensor Heater : Voltage Below Normal
- SPN 3222 FMI 5Aftertreatment #1 Intake Gas Sensor Heater : Current Below Normal
- SPN 3226 FMI 7Aftertreatment #1 Outlet NOx : Not Responding Properly
- SPN 3227 FMI 16Aftertreatment #1 Outlet O2 : High - moderate severity (2)
- SPN 3241 FMI 3Exhaust Gas Temperature 1 : Voltage Above Normal
- SPN 3241 FMI 4Exhaust Gas Temperature 1 : Voltage Below Normal
- SPN 3242Particulate Trap Intake Gas Temperature : High - most severe (3)
- SPN 3242 FMI 15Particulate Trap Intake Gas Temperature : High - least severe (1)
- SPN 3242 FMI 16Particulate Trap Intake Gas Temperature : High - moderate severity (2)
- SPN 3242 FMI 17Particulate Trap Intake Gas Temperature : Low - Least Severe (1)
- SPN 3242 FMI 18Particulate Trap Intake Gas Temperature : Low - Moderate Severity (2)
- SPN 3242 FMI 3Particulate Trap Intake Gas Temperature : Voltage Above Normal
- SPN 3242 FMI 4Particulate Trap Intake Gas Temperature : Voltage Below Normal
- SPN 3251Particulate Trap Differential Pressure : High - most severe (3)
- SPN 3251 FMI 10Particulate Trap Differential Pressure : Abnormal Rate of Change
- SPN 3251 FMI 16Particulate Trap Differential Pressure : High - moderate severity (2)
- SPN 3251 FMI 17Particulate Trap Differential Pressure : Low - least severe (1)
- SPN 3251 FMI 18Particulate Trap Differential Pressure : Low - moderate severity (2)
- SPN 3251 FMI 3Particulate Trap Differential Pressure : Voltage Above Normal
- SPN 3251 FMI 4Particulate Trap Differential Pressure : Voltage Below Normal
- SPN 3251 FMI 7Particulate Trap Differential Pressure : Not Responding Properly
- SPN 3358 FMI 10Engine Exhaust Gas Recirculation 1 Intake Pressure : Abnormal Rate of Change
- SPN 3358 FMI 13Engine Exhaust Gas Recirculation Inlet Pressure : Calibration Required
- SPN 3358 FMI 16Engine Exhaust Gas Recirculation Inlet Pressure : High - moderate severity
- SPN 3358 FMI 21Engine Exhaust Gas Recirculation Inlet Pressure : Data Drifted Low
- SPN 3358 FMI 3Engine Exhaust Gas Recirculation Inlet Pressure : Voltage Above Normal
- SPN 3358 FMI 4Engine Exhaust Gas Recirculation Inlet Pressure : Voltage Below Normal
- SPN 3362 FMI 14Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Input Lines : Special Instruction
- SPN 3464 FMI 5Engine Throttle Actuator 1 Control Command : Current Below Normal
- SPN 3464 FMI 6Engine Throttle Actuator 1 Control Command : Current Above Normal
- SPN 3464 FMI 7Engine Throttle Actuator 1 Control Command : Not Responding Properly
- SPN 3473 FMI 31Aftertreatment #1 Failed to Ignite
- SPN 3474 FMI 14Aftertreatment #1 Loss of Combustion : Special Instruction
- SPN 3474 FMI 31Aftertreatment #1 Loss of Combustion
- SPN 3479 FMI 5Aftertreatment #1 Fuel Pressure Control : Current Below Normal
- SPN 3479 FMI 6Aftertreatment #1 Fuel Pressure Control : Current Above Normal
- SPN 3480 FMI 15Aftertreatment #1 Fuel Pressure #1 : High - Least Severe (1)
- SPN 3480 FMI 16Aftertreatment #1 Fuel Pressure #1 : High - Moderate Severity (2)
- SPN 3480 FMI 17Aftertreatment #1 Fuel Pressure #1 : Low - Least severe (1)
- SPN 3480 FMI 18Aftertreatment #1 Fuel Pressure #1 : Low - Moderate Severity (2)
- SPN 3480 FMI 3Aftertreatment #1 Fuel Pressure #1 : Voltage Above Normal
- SPN 3480 FMI 4Aftertreatment #1 Fuel Pressure #1 : Voltage Below Normal
- SPN 3483 FMI 11Aftertreatment #1 Regeneration Status : Other Failure Mode
Other Caterpillar machine types
Fault code lists by brand
- Volvo6,508 codes
- New Holland Tractor3,475 codes
- FPT3,033 codes
- Case IH2,992 codes
- Bobcat2,653 codes
- Challenger Tractor2,434 codes
- New Holland Combine2,274 codes
- John Deere Tractors1,884 codes
- Case Wheel Loader1,859 codes
- John Deere Engines1,853 codes
- Cummins1,847 codes
- Challenger Rubber Track Tractor1,747 codes
- Volvo Wheel Loader1,726 codes
- Deutz1,684 codes
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.