CAT Fault Codes List: 327-2 to 3362
Page 26 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 327-2 to 3362
- 327-2Exhaust Gas Temperature 2 : Data Drifted High
- 327-3Exhaust Gas Temperature 2 : Voltage Above Normal
- 327-4Exhaust Gas Temperature 2 : Voltage Below Normal
- 3275Power Converter Control #1 Enable Feedback Line
- 3276Power Converter Control #2 Enable Feedback Line
- 3277Swing Pressure Sensor
- 3279Ride Control Rod End Check Valve Solenoid
- 328Output Transfer Gear <(OTG)> Filter Plugged
- 328-0Exhaust Gas Temperature 3 : High - Least Severe (1)
- 3281Ride Control Balance Solenoid
- 328-2Exhaust Gas Temperature 3 : Drifted High
- 328-3Exhaust Gas Temperature 3 : Voltage Above Normal
- 328-4Exhaust Gas Temperature 3 : Voltage Below Normal
- 3285Particulate Trap Differential Pressure (bank 2)
- 3286Tilt Kickout Switch
- 3287Primary Brake Air Pressure Sensor
- 3288Air Compressor Motor Relay
- 3289Engine Start Alarm Relay
- 329Transmission Filter Plugged
- 3290Traction Motor Blower #1 Air Flow Sensor
- 3291Traction Motor Blower #2 Air Flow Sensor
- 3293Bridge Contactor
- 3294Parallel Contactor #1
- 3295Parallel Contactor #2
- 3296Parallel Contactor #3
- 3297Parallel Contactor #4
- 3298Parallel Contactor #5
- 3299Parallel Contactor #6
- 330Transmission Output Speed Mismatch
- 3300Air Compressor Inverter
- 3301Traction Motor Blower Inverter
- 3302Generator #1 Current Sensor #1
- 3303Generator #1 Current Sensor #2
- 3304Generator #2 Current Sensor #2
- 3305Generator #2 Current Sensor #2
- 3306Variable Valve Timing and/or Control issue
- 3307Fifth Wheel Error Status detected
- 3308Electric Retarding Grid Blower #1
- 3309Electric Retarding Grid Blower #2
- 331Manual Transmission Override Activated
- 3310Electric Retarding Grid #3 Current Sensor
- 3311Electric Retarding Grid Fan Power Converter
- 3312Alternator Excitation Field Regulator Enable Feedback Line
- 3313Short Range Object Detection Sensor #1
- 3314Short Range Object Detection Sensor #2
- 3315Short Range Object Detection Sensor #3
- 3316Short Range Object Detection Sensor #4
- 3317Medium Object Detection Sensor #1
- 3318Medium Object Detection Sensor #2
- 3319Medium Object Detection Sensor #3
- 332Excess Water in the intake air manifold
- 3320Medium Object Detection Sensor #4
- 3321Medium Object Detection Sensor #5
- 332-11Aftertreatment #1 Fuel Pressure #1 : High - Moderate Severity (2)
- 3322Medium Object Detection Sensor #6
- 332-3Aftertreatment #1 Fuel Pressure #1 : Voltage Above Normal
- 33232Medium Range Object Detection Sensor #4 Power Supply
- 332-4Aftertreatment #1 Fuel Pressure #1 : Voltage Below Normal
- 3325Short Range Object Detection Sensor #1 Power Supply
- 3326Short Range Object Detection Sensor #2 Power Supply
- 3327Short Range Object Detection Sensor #3 Power Supply
- 3328Short Range Object Detection Sensor #4 Power Supply
- 3329Medium Range Object Detection Sensor #1 Power Supply
- 333High Auto Lube Pressure
- 3330Medium Range Object Detection Sensor #2 Power Supply
- 3331Medium Range Object Detection Sensor #3 Power Supply
- 3333Medium Range Object Detection Sensor #5 Power Supply
- 3334Medium Range Object Detection Sensor #6 Power Supply
- 333-5Aftertreatment #1 Fuel Pressure Control : Current Below Normal
- 333-6Aftertreatment #1 Fuel Pressure Control : Current Above Normal
- 3338Cooling Fan #1 High Speed Relay
- 3339Cooling Fan #1 Low Speed Relay
- 334Low Auto Lube Pressure
- 3340Engine Charge Air Cooler 1 Inlet Pressure
- 3341Engine Charge Air Cooler 2 Inlet Pressure
- 3342Engine Coolant Pump Differential Pressure
- 3343Cooling Fan #3 Low Speed Relay
- 3344Traction Motor #1 To Traction Motor #4 Series Contactor
- 334-5Aftertreatment #1 Fuel Enable Actuator : Current Below Normal
- 334-6Aftertreatment #1 Fuel Enable Actuator : Current Above Normal
- 3347Ground Fault Relay
- 3348Main Air Supply Relay
- 3349Main Air Reservoir Pressure Sensor
- 335Low Swing Brake Pilot Pressure
- 3350Traction Motor #1 Current Sensor
- 3351Engine Exhaust Pressure Regulator Vent Valve Control
- 3352Engine Exhaust Pressure Regulator Vent Valve Position
- 3353Traction Motor #4 Current Sensor
- 3354Traction Motor #5 Current Sensor
- 335-5Aftertreatment #1 Ignition : Current Below Normal
- 335-6Aftertreatment #1 Ignition : Current Above Normal
- 3357Traction Motor #2 Voltage Sensor
- 3358Engine Exhaust Gas Recirculation Inlet Pressure
- 3359Transmission Oil Filter Restriction Switch
- 336Low Travel Brake Pilot Pressure
- 3360Aftertreatment 1 Diesel Exhaust Fluid Controller
- 336-1Aftertreatment #1 Fuel Pressure #2 : Low - Least Severe (1)
- 336-11Aftertreatment #1 Fuel Pressure #2 : High - Moderate Severity (2)
- 336-14Aftertreatment #1 Fuel Pressure #2 : Low - Moderate Severity (2)
- 3362Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Input Lines
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.