CAT Engine Fault Codes List: SPN 105 FMI 16 to SPN 1785 FMI 13
Page 8 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 105 FMI 16 to SPN 1785 FMI 13
- SPN 105 FMI 16Engine Intake Manifold #1 Temperature : High - Moderate Severity (2)
- SPN 105 FMI 18Engine Intake Manifold #1 Temperature : High - most severe (3)
- SPN 105 FMI 3Engine Intake Manifold #1 Temperature : Voltage Above Normal
- SPN 105 FMI 4Engine Intake Manifold #1 Temperature : Voltage Below Normal
- SPN 1071 FMI 5Cooling Fan Drive Output : Current Below Normal
- SPN 1071 FMI 6Cooling Fan Drive Output : Current Above Normal
- SPN 1075 FMI 5Engine Electric Lift Pump For Engine Fuel Supply : Current Below Normal
- SPN 1075 FMI 6Engine Electric Lift Pump For Engine Fuel Supply : Current Above Normal
- SPN 1076 FMI 2Engine Fuel Injection Pump Fuel Control Valve : Erratic, Intermittent, or Incorrect
- SPN 1076 FMI 5Engine Fuel Injection Pump Fuel Control Valve : Current Below Normal
- SPN 1076 FMI 6Engine Fuel Injection Pump Fuel Control Valve : Current Above Normal
- SPN 107 FMI 15Engine Air Filter 1 Differential Pressure : High - least severe (1)
- SPN 107 FMI 16Engine Air Filter 1 Differential Pressure : High - moderate severity (2)
- SPN 107 FMI 2Engine Air Filter 1 Differential Pressure : Erratic, Intermittent, or Incorrect
- SPN 107 FMI 4Engine Air Filter 1 Differential Pressure : Voltage Below Normal
- SPN 1081 FMI 5Engine Wait to Start Lamp : Current Below Normal
- SPN 1081 SPN 6Engine Wait to Start Lamp : Current Above Normal
- SPN 108 FMI 21Barometric Pressure : Data Drifted Low
- SPN 108 FMI 3Barometric Pressure : Voltage Above Normal
- SPN 108 FMI 4Barometric Pressure : Voltage Below Normal
- SPN 109 FMI 1Low Engine Coolant Pressure - most severe
- SPN 109 FMI 17Low Engine Coolant Pressure - least severe
- SPN 109 FMI 18Low Engine Coolant Pressure - moderate severity
- SPN 110Engine Coolant Temperature : High - Most Severe (3)
- SPN 1109 FMI 31Engine Protection System Approaching Shutdown
- SPN 110 FMI 1Low Coolant Temperature - most severe
- SPN 110 FMI 16Engine Coolant Temperature : High - moderate severity (2)
- SPN 110 FMI 17Low Coolant Temperature - least severe
- SPN 110 FMI 18Low Coolant Temperature - moderate severity
- SPN 110 FMI 3Engine Coolant Temperature Sensor : Voltage Above Normal
- SPN 110 FMI 4Engine Coolant Temperature Sensor : Voltage Below Normal
- SPN 1110 FMI 31Engine Protection System has Shutdown Engine
- SPN 111 FMI 1Engine Coolant Level : Low - Most Severe (3)
- SPN 111 FMI 17Engine Coolant Level : Low - least severe
- SPN 111 FMI 18Engine Coolant Level : Low - moderate severity (2)
- SPN 1127 FMI 16Engine Turbocharger 1 Boost Pressure : High - moderate severity (2)
- SPN 1127 FMI 18Engine Turbocharger 1 Boost Pressure : Low - moderate severity (2)
- SPN 1188 FMI 5Engine Turbocharger Wastegate Actuator 1 Position : Current Below Normal
- SPN 1188 FMI 6Engine Turbocharger Wastegate Actuator 1 Position : Current Above Normal
- SPN 1196 FMI 14Anti-theft Component Status States : Special Instruction
- SPN 1196 FMI 2Anti-theft Component Status States : Erratic, Intermittent, or Incorrect
- SPN 1196 FMI 9Anti-theft Component Status States : Abnormal Update Rate
- SPN 1208 FMI 13Engine Pre-filter Oil Pressure : Out of Calibration
- SPN 1209 FMI 3Engine Exhaust Gas Pressure : Voltage Above Normal
- SPN 1209 FMI 4Engine Exhaust Gas Pressure : Voltage Below Normal
- SPN 1221 FMI 14Continuously Monitored Systems Support/Status ; Special Instruction
- SPN 1221 FMI 2Continuously Monitored Systems Support/Status ; Erratic, Intermittent, or Incorrect
- SPN 1231 FMI 14J1939 Network #2 : Special Instruction
- SPN 1231 FMI 9J1939 Network #2 : Abnormal Update Rate
- SPN 1239Engine Fuel Leakage 1 : High - most severe (3)
- SPN 1239 FMIEngine Fuel Leakage 1 : High - most severe (3)
- SPN 1318High Exhaust Differential Temperature - most severe
- SPN 1318 FMI 15High Exhaust Differential Temperature - least severe
- SPN 1387Auxiliary Pressure #1 : High - most severe
- SPN 1387-15High Auxiliary Pressure
- SPN 1387-16High Auxiliary Pressure
- SPN 1387 FMI 15Auxiliary Pressure #1 : High - least severe
- SPN 1387 FMI 16Auxiliary Pressure #1 : High - moderate severity
- SPN 1485 FMI 14ECM Main relay : Special Instruction
- SPN 1485 FMI 7ECM Main Relay : Not Responding Properly
- SPN 152 FMI 2Number Of ECU Resets : Erratic, Intermittent, or Incorrect
- SPN 157Engine Injector Metering Rail #1 Pressure : High - most severe (3)
- SPN 157 FMI 10Engine Injector Metering Rail #1 Pressure : Abnormal Update Rate
- SPN 157 FMI 16Engine Injector Metering Rail #1 Pressure : High - moderate severity (2)
- SPN 157 FMI 17Engine Injector Metering Rail #1 Pressure : Low - least severe (1)
- SPN 157 FMI 18Engine Injector Metering Rail #1 Pressure : Low - moderate severity (2)
- SPN 157 FMI 2Engine Injector Metering Rail #1 Pressure : Erratic, Intermittent, or Incorrect
- SPN 157 FMI 3Engine Injector Metering Rail #1 Pressure : Voltage Above Normal
- SPN 157 FMI 4Engine Injector Metering Rail #1 Pressure : Voltage Below Normal
- SPN 1638 FMI 3Hydraulic Temperature : Voltage Above Normal
- SPN 1638 FMI 4Hydraulic Temperature : Voltage Below Normal
- SPN 1639-17Low Engine Cooling Fan Speed
- SPN 164 FMI 11Injection Actuation Pressure System Fault
- SPN 1664-31Engine Overcrank
- SPN 1664 FMI 31Engine Automatic Start Failed
- SPN 166 FMI 14Engine Rated Power : Special Instuction
- SPN 166 FMI 2Engine Rated Power : Erratic, Intermittent, or Incorrect
- SPN 168 FMI 2Battery Potential / Power Input 1 : Erratic, Intermittent or Incorrect
- SPN 168 FMI 3Battery Potential / Power Input #1 : Voltage Above Normal
- SPN 168 FMI 31Idle Elevated to Increase Battery Voltage
- SPN 168 FMI 4Battery Potential / Power Input #1 : Voltage Below Normal
- SPN 172 FMI 3Engine Air Inlet Temperature : Voltage Above Normal
- SPN 172 FMI 4Engine Air Inlet Temperature : Voltage Below Normal
- SPN 173 FMI 3Engine Exhaust Gas Temperature : Voltage Above Normal
- SPN 174High Fuel Supply Temperature
- SPN 174 FMIEngine Fuel Temperature 1 : High - most severe
- SPN 174 FMI 15Engine Fuel Temperature 1 : High - Least Severe (1)
- SPN 174 FMI 16Engine Fuel Temperature 1 : High - Moderate Severity (2)
- SPN 174 FMI 3Engine Fuel Temperature 1 : Voltage Above Normal
- SPN 174 FMI 4Engine Fuel Temperature 1 : Voltage Below Normal
- SPN 175High Engine Oil Temperature
- SPN 175 FMI 15High Engine Oil Temperature
- SPN 175 FMI 16High Engine Oil Temperature
- SPN 1761-1Low Aftertreatment #1 SCR Catalyst Reagent Tank #1 Level
- SPN 1761-17Low Aftertreatment #1 SCR Catalyst Reagent Tank #1 Level
- SPN 1761-18Low Aftertreatment #1 SCR Catalyst Reagent Tank #1 Level
- SPN 1761 FMI 1Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Low - most severe (3)
- SPN 1761 FMI 17Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Low - least severe (1)
- SPN 1761 FMI 18Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Low - moderate severity (2)
- SPN 1785 FMI 13Intake Manifold Pressure Sensor : Out of Calibration
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.