CAT Fault Codes List: 2591 to 2697
Page 19 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 2591 to 2697
- 2591Counterbalance Standby Solenoid
- 2592Auxiliary Valve #1 Port A Flow Solenoid
- 2593Auxiliary Valve #1 Port B Flow Solenoid
- 2594Hammer Solenoid
- 2595Service Brake Solenoid
- 2596Brake Pressure Modulation Solenoid
- 2597Blade Raise Load Sense Solenoid
- 2598Blade Lower Load Sense Solenoid
- 2599Auxiliary Valve #1 Port A <Variable> Line Relief Pressure Solenoid
- 260Exhaust Oxygen Sensor
- 2600Auxiliary Valve #1 Port B <Variable> Line Relief Pressure Solenoid
- 2601Cylinder #1 Injector Actuator #1
- 2602Hydraulic oil level issue.
- 2603Pneumatic supply pressure request.
- 2604Parking/trailer air pressure request.
- 2605Service brake air pressure request, circuit #1
- 2606Service brake air pressure request, circuit #2
- 2607Auxiliary equipment supply pressure request
- 2608Air suspension supply pressure request
- 2609Cylinder #5 Injector Actuator #1
- 261637 13 143 Primary to secondary speed sig Calibration required
- 2610Cylinder #5 Injector Actuator #2
- 2611Cylinder #6 Injector Actuator #1
- 2612Cylinder #6 Injector Actuator #2
- 2614Steering axle lube pressure issue
- 2615Cylinder #8 Injector Actuator #1
- 2616Cylinder #8 Injector Actuator #2
- 2617Cylinder #9 Injector Actuator #1
- 2618Cylinder #9 Injector Actuator #2
- 2619Cylinder #10 Injector Actuator #1
- 2621079 4 516 5V sensor DC supply shorted low
- 2620Cylinder #10 Injector Actuator #2
- 2621Pneumatic brake pressure limitation valve front axle issue
- 2622Hillholder system fault
- 2623APP2 signal Out of Range HIGH
- 2625Cylinder #13 Injector Actuator #1
- 2626Cylinder #13 Injector Actuator #2
- 2627Engine gaseous fuel shutoff valve - high pressure issue
- 2628Engine gaseous fuel shutoff valve - low pressure issue
- 2629Engine turbocharger 1 compressor outlet temperature issue
- 263Digital Sensor Power Supply (8V or 12V)
- 2630CACOT signal does not agree with other sensors
- 2631Engine charge air cooler outlet pressure issue
- 2632Engine charge air cooler bypass issue
- 2635Cylinder #18 Injector Actuator #1
- 2636Cylinder #18 Injector Actuator #2
- 2637Cylinder #19 Injector Actuator #1
- 2638Differential lock control valve #2 issue
- 2639Cylinder #20 Injector Actuator #1
- 264Emergency Stop Activated
- 2640Cylinder #20 Injector Actuator #2
- 2641Cylinder #21 Injector Actuator #1
- 2642Cylinder #21 Injector Actuator #2
- 2643Cylinder #22 Injector Actuator #1
- 2644Cylinder #22 Injector Actuator #2
- 2645Cylinder #23 Injector Actuator #1
- 2646Cylinder #23 Injector Actuator #2
- 2647Cylinder #24 Injector Actuator #1
- 2649Low air pressure warning
- 265User Defined Shutdown Input
- 2650Primary Steering Valve ECM Power Supply Output
- 2651Lift Kickout Enable/Set Switch
- 2653Screed Left Material Height Sensor
- 2654Screed Right Material Height Sensor
- 2655Left Conveyor Material Height Sensor
- 2656Right Conveyor Material Height Sensor
- 2657Left Hopper Lift Switch
- 2658Right Hopper Lift Switch
- 2659EGR High Flow Rate detected
- 266Crank Without Injection Input
- 2660Air Conditioner Condenser Relay
- 2661Cab Air Temperature Control
- 2665Boom Float Down Solenoid
- 2666Offset Boom Enable Switch
- 2667Limp Home Switch
- 2668Hydraulic Cab Riser Enable Switch
- 2669Creeper Mode Switch
- 267High Gas Fuel Pressure
- 2670Stabilizer Flow Control Solenoid
- 2671Air Conditioner Compressor Clutch Solenoid
- 2677Traction Assist Speed Dial
- 2678Access Platform Position Switch
- 2679Blade Shake Switch
- 268630 2 527 Customer or system parameters data incorrect
- 2680Center Implement Pump Oil Supply Shutoff Valve Switch
- 2681Right Implement Pump Oil Supply Shutoff Valve Switch
- 2683Secondary Brake Pedal Position Sensor
- 2684Ride Control Solenoid #3
- 2685Left Drive Motor Speed Sensor #1
- 2686Left Drive Motor Speed Sensor #2
- 2687Right Drive Motor Speed Sensor #1
- 2688Right Drive Motor Speed Sensor #2
- 2689Breathing Air Pressure Sensor
- 269Customer Shutdown Requested
- 2690Aerial Master Stream Water Pressure Sensor
- 2691Aerial Master Stream Water Flow Sensor
- 2692Aerial Ambient Air Temperature Sensor
- 2695Crane Operation Mode Light
- 2696Bucket Cylinder Head End Pressure Switch
- 2697Crane Mode Switch
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.