CAT Fault Codes List: 3186 to 3271
Page 25 of 83 of the full CAT fault code list (8,286 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.
CAT codes 3186 to 3271
- 3186Transmission differential lock clutch pressure indicator
- 3187Transmission shift console data link
- 3188Auxilary Valve #1 Port A Solenoid Return
- 3189Auxilary Valve #2 Port B Solenoid Return
- 319Cylinder #19 Gas Admission Valve (GAV) Stuck Open
- 3190Auxilary Valve #2 Port A Solenoid Return
- 3191Winch Spool In Solenoid Return
- 319-11Diesel Particulate Filter Intake Gas Temperature (bank 2) : High - Moderate Severity (2)
- 319-14Diesel Particulate Filter Intake Gas Temperature (bank 2) : Low - Moderate Severity (2)
- 319-2Diesel Particulate Filter Intake Gas Temperature (bank 2) : Erratic, Intermittent, or Incorrect
- 319-3Diesel Particulate Filter Intake Gas Temperature (bank 2) : Voltage Above Normal
- 319-4Diesel Particulate Filter Intake Gas Temperature (bank 2) : Voltage Below Normal
- 3195Blade Angle Left Solenoid Return
- 3196Blade Angle Right Solenoid Return
- 3197Counterweight Extend Solenoid Return
- 3198Counterweight Retract Solenoid Return
- 3199Counterweight Lock Bypass Solenoid Return
- 320Cylinder #20 Gas Admission Valve (GAV) Stuck Open
- 320-0Diesel Particulate Filter Outlet Gas Temperature (bank 1) : High - Least Severe (1)
- 320-1Diesel Particulate Filter Outlet Gas Temperature (bank 1) : Low - Moderate Severity (2)
- 320-11Diesel Particulate Filter Outlet Gas Temperature (bank 1) : High - Moderate Severity (2)
- 320-2Diesel Particulate Filter Outlet Gas Temperature (bank 1) : Erratic, Intermittent, or Incorrect
- 320-3Diesel Particulate Filter Outlet Gas Temperature (bank 1) : Voltage Above Normal
- 320-4Diesel Particulate Filter Outlet Gas Temperature (bank 1) : Voltage Below Normal
- 3205Loader Auxilary Valve Port B Solenoid Return
- 3206Loader Auxilary Valve Port A Anti Drift Solenoid Return
- 3207-15 Volt Sensor Power Supply
- 3208Variable Geometry Turbocharger Vane Position Sensor
- 3209Auxilary Valve #2 Float Switch
- 321Diagnostic Reset/Acknowledge Switch
- 321-0Diesel Particulate Filter Outlet Gas Temperature (bank 2) : High - Least Severe (1)
- 321-1Diesel Particulate Filter Outlet Gas Temperature (bank 2) : Low - Moderate Severity (2)
- 321-11Diesel Particulate Filter Outlet Gas Temperature (bank 2) : High - Moderate Severity (2)
- 321-2Diesel Particulate Filter Outlet Gas Temperature (bank 2) : Erratic, Intermittent, or Incorrect
- 321-3Diesel Particulate Filter Outlet Gas Temperature (bank 2) : Voltage Above Normal
- 321-4Diesel Particulate Filter Outlet Gas Temperature (bank 2) : Voltage Below Normal
- 3215Air suspension control prohibited
- 3216Aftertreatment #1 NOx intake issue
- 3217Aftertreatment #1 O2 intake issue
- 3218Aftertreatment #1 gas sensor power out of range
- 3219Aftertreatment #1 gas sensor temperature issue
- 322High Left Exhaust Temperature
- 3220Aftertreatment #1 NOx reading unstable
- 3221Aftertreatment #1 O2 reading unstable
- 3222Aftertreatment #1 gas sensor heater issue
- 3223O 2 S heater temperature below minimum at low battery PWR
- 3224Aftertreatment #1 NOx sensor issue
- 3225Aftertreatment #1 oxygen sensor issue
- 3226Aftertreatment #1 outlet NOx issue
- 3227Aftertreatment #1 outlet O2 issue
- 3228Aftertreatment #1 outlet gas sensor power out of range
- 3229Aftertreatment #1 outlet gas sensor temperature issue
- 323Low Left Exhaust Temperature
- 3230Aftertreatment #1 outlet NOx reading unstable
- 3231Aftertreatment #1 outlet O2 reading unstable
- 3232Aftertreatment #1 outlet gas sensor heater issue
- 3233Aftertreatment #1 outlet gas sensor heater control issue
- 3234Aftertreatment #1 outlet NOx sensor issue
- 3235Aftertreatment #1 outlet oxygen sensor issue
- 3236Exhaust gas mass issue
- 3237Aftertreatment intake dew point message issue
- 3238Aftertreatment exhaust dew point message issue
- 3239Aftertreatment intake dew point message issue
- 324Low Right Exhaust Temperature
- 324-0Diesel Particulate Filter Differential Pressure (bank 1) : High - Moderate Severity (2)
- 324-1Diesel Particulate Filter Differential Pressure (bank 1) : Low - Moderate Severity (2)
- 324-11Diesel Particulate Filter Differential Pressure (bank 1) : High - Moderate Severity (2)
- 324-2Diesel Particulate Filter Differential Pressure (bank 1) : Erratic, Intermittent, or Incorrect
- 324-3Diesel Particulate Filter Differential Pressure (bank 1) : Voltage Above Normal
- 324-4Diesel Particulate Filter Differential Pressure (bank 1) : Voltage Below Normal
- 3246DPFOT signal does not agree with other exhaust sensors
- 3247Cylinder Light Relay
- 3248Ripper Light Relay
- 3249Exhaust gas temperature 2 issue
- 325High Exhaust Stack Temperature
- 325-0Diesel Particulate Filter Differential Pressure (bank 2) : High - Moderate Severity (2)
- 3251Diesel Particulate Filter Differential Pressure (bank 2) : Low - Moderate Severity (2)
- 325-11Diesel Particulate Filter Differential Pressure (bank 2) : High - Most Severe (3)
- 325-2Diesel Particulate Filter Differential Pressure (bank 2) : Erratic, Intermittent, or Incorrect
- 325-3Diesel Particulate Filter Differential Pressure (bank 2) : Voltage Above Normal
- 325-4Diesel Particulate Filter Differential Pressure (bank 2) : Voltage Below Normal
- 3255Aftertreatment #2 NOx intake issue
- 3256Aftertreatment #2 O2 intake issue
- 3257Aftertreatment #2 gas sensor power out of range
- 3258Aftertreatment #2 Intake Gas Sensor at Temperature
- 3259Parking Brake Relay
- 326Low Transmission Latching Pressure
- 3260Operator Horn Switch
- 3261Fire Suppression Activation Switch
- 326-2Exhaust Gas Temperature 1 : Data Drifted High
- 326-3Exhaust Gas Temperature 1 : Voltage Above Normal
- 326-4Exhaust Gas Temperature 1 : Voltage Below Normal
- 3265Aftertreatment #2 Outlet NOx detected
- 3266Aftertreatment #2 Outlet %O2 detected
- 3267Air Conditioner Compressor Power Supply
- 3268Aftertreatment #2 Outlet Gas Sensor at Temperature
- 3269DC Power Bus #1 Power Supply
- 327Low Output Transfer Gear <(OTG)> Pressure
- 3270DC Power Bus #1 Supply Input
- 3271Drive Motor Speed Sensor #1 Signal Line #1
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.