P25xx fault codes
256 generic codes from P2500 to P25FF, with what each means.
- P2500 Generator Lamp/L-Terminal Circuit Low
- P2501 Generator Lamp/L-Terminal Circuit High
- P2502 Charging System Voltage
- P2503 Charging System Voltage Low
- P2504 Charging System Voltage High
- P2505 ECM/PCM Power Input Signal
- P2506 ECM/PCM Power Input Signal Range/Performance
- P2507 ECM/PCM Power Input Signal Low
- P2508 ECM/PCM Power Input Signal High
- P2509 ECM/PCM Power Input Signal Intermittent
- P250A Engine Oil Level Sensor Circuit
- P250B Engine Oil Level Sensor Circuit Range/Performance
- P250C Engine Oil Level Sensor Circuit Low
- P250D Engine Oil Level Sensor Circuit High
- P250E Engine Oil Level Sensor Circuit Intermittent/Erratic
- P250F Engine Oil Level Too Low
- P2510 ECM/PCM Power Relay Sense Circuit Range/Performance
- P2511 ECM/PCM Power Relay Sense Circuit Intermittent
- P2512 Event Data Recorder Request Circuit/Open
- P2513 Event Data Recorder Request Circuit Low
- P2514 Event Data Recorder Request Circuit High
- P2515 A/C Refrigerant Pressure Sensor B Circuit
- P2516 A/C Refrigerant Pressure Sensor B Circuit Range/Performance
- P2517 A/C Refrigerant Pressure Sensor B Circuit Low
- P2518 A/C Refrigerant Pressure Sensor B Circuit High
- P2519 A/C Request A Circuit
- P251A PTO Enable Switch Circuit/Open
- P251B PTO Enable Switch Circuit Low
- P251C PTO Enable Switch Circuit High
- P251D PTO Engine Shutdown Circuit/Open
- P251E PTO Engine Shutdown Circuit Low
- P251F PTO Engine Shutdown Circuit High
- P2520 A/C Request A Circuit Low
- P2521 A/C Request A Circuit High
- P2522 A/C Request B Circuit
- P2523 A/C Request B Circuit Low
- P2524 A/C Request B Circuit High
- P2525 Vacuum Reservoir Pressure Sensor Circuit
- P2526 Vacuum Reservoir Pressure Sensor Circuit Range/Performance
- P2527 Vacuum Reservoir Pressure Sensor Circuit Low
- P2528 Vacuum Reservoir Pressure Sensor Circuit High
- P2529 Vacuum Reservoir Pressure Sensor Circuit Intermittent
- P252A Engine Oil Quality Sensor Circuit
- P252B Engine Oil Quality Sensor Circuit Range/Performance
- P252C Engine Oil Quality Sensor Circuit Low
- P252D Engine Oil Quality Sensor Circuit High
- P252E Engine Oil Quality Sensor Circuit Intermittent/Erratic
- P252F Engine Oil Level Too High
- P2530 Ignition Switch Run Position Circuit
- P2531 Ignition Switch Run Position Circuit Low
- P2532 Ignition Switch Run Position Circuit High
- P2533 Ignition Switch Run/Start Position Circuit
- P2534 Ignition Switch Run/Start Position Circuit Low
- P2535 Ignition Switch Run/Start Position Circuit High
- P2536 Ignition Switch Accessory Position Circuit
- P2537 Ignition Switch Accessory Position Circuit Low
- P2538 Ignition Switch Accessory Position Circuit High
- P2539 Low Pressure Fuel System Sensor Circuit
- P253A PTO Sense Circuit/Open
- P253B PTO Sense Circuit Range/Performance
- P253C PTO Sense Circuit Low
- P253D PTO Sense Circuit High
- P253E PTO Sense Circuit Intermittent/Erratic
- P253F Engine Oil Deteriorated
- P2540 Low Pressure Fuel System Sensor Circuit Range/Performance
- P2541 Low Pressure Fuel System Sensor Circuit Low
- P2542 Low Pressure Fuel System Sensor Circuit High
- P2543 Low Pressure Fuel System Sensor Circuit Intermittent
- P2544 Torque Management Request Input Signal A
- P2545 Torque Management Request Input Signal A Range/Performance
- P2546 Torque Management Request Input Signal A Low
- P2547 Torque Management Request Input Signal A High
- P2548 Torque Management Request Input Signal B
- P2549 Torque Management Request Input Signal B Range/Performance
- P254A PTO Speed Selector Sensor/Switch 1 Circuit/Open
- P254B PTO Speed Selector Sensor/Switch 1 Range/Performance
- P254C PTO Speed Selector Sensor/Switch 1 Circuit Low
- P254D PTO Speed Selector Sensor/Switch 1 Circuit High
- P254E PTO Speed Selector Sensor/Switch 1 Circuit Intermittent/Erratic
- P254F Engine Hood Switch Circuit
- P2550 Torque Management Request Input Signal B Low
- P2551 Torque Management Request Input Signal B High
- P2552 Throttle/Fuel Inhibit Circuit
- P2553 Throttle/Fuel Inhibit Circuit Range/Performance
- P2554 Throttle/Fuel Inhibit Circuit Low
- P2555 Throttle/Fuel Inhibit Circuit High
- P2556 Engine Coolant Level Sensor/Switch Circuit
- P2557 Engine Coolant Level Sensor/Switch Circuit Range/Performance
- P2558 Engine Coolant Level Sensor/Switch Circuit Low
- P2559 Engine Coolant Level Sensor/Switch Circuit High
- P255A PTO Speed Selector Sensor/Switch 2 Circuit/Open
- P255B PTO Speed Selector Sensor/Switch 2 Range/Performance
- P255C PTO Speed Selector Sensor/Switch 2 Circuit Low
- P255D PTO Speed Selector Sensor/Switch 2 Circuit High
- P255E PTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic
- P255F A/C Request A Circuit Range/Performance
- P2560 Engine Coolant Level Low
- P2561 A/C Control Module Requested MIL Illumination
- P2562 Turbocharger Boost Control Position Sensor A Circuit
- P2563 Turbocharger Boost Control Position Sensor A Circuit Range/Performance
- P2564 Turbocharger Boost Control Position Sensor A Circuit Low
- P2565 Turbocharger Boost Control Position Sensor A Circuit High
- P2566 Turbocharger Boost Control Position Sensor A Circuit Intermittent
- P2567 Direct Ozone Reduction Catalyst Temperature Sensor Circuit
- P2568 Direct Ozone Reduction Catalyst Temperature Sensor Circuit Range/Performance
- P2569 Direct Ozone Reduction Catalyst Temperature Sensor Circuit Low
- P256A Engine Idle Speed Selector Sensor/Switch Circuit/Open
- P256B Engine Idle Speed Selector Sensor/Switch Range/Performance
- P256C Engine Idle Speed Selector Sensor/Switch Circuit Low
- P256D Engine Idle Speed Selector Sensor/Switch Circuit High
- P256E Engine Idle Speed Selector Sensor/Switch Circuit Intermittent/Erratic
- P256F A/C Request B Circuit Range/Performance
- P2570 Direct Ozone Reduction Catalyst Temperature Sensor Circuit High
- P2571 Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/Erratic
- P2572 Direct Ozone Reduction Catalyst Deterioration Sensor Circuit
- P2573 Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Range/Performance
- P2574 Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low
- P2575 Direct Ozone Reduction Catalyst Deterioration Sensor Circuit High
- P2576 Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/Erratic
- P2577 Direct Ozone Reduction Catalyst Efficiency Below Threshold
- P2578 Turbocharger/Supercharger Speed Sensor A Circuit
- P2579 Turbocharger/Supercharger Speed Sensor A Circuit Range/Performance
- P257A Vacuum Reservoir Control Circuit/Open
- P257B Vacuum Reservoir Control Circuit Low
- P257C Vacuum Reservoir Control Circuit High
- P257D Engine Hood Switch Circuit Range/Performance
- P257E Engine Hood Switch Circuit Low
- P257F Engine Hood Switch Circuit High
- P2580 Turbocharger/Supercharger Speed Sensor A Circuit Low
- P2581 Turbocharger/Supercharger Speed Sensor A Circuit High
- P2582 Turbocharger/Supercharger Speed Sensor A Circuit Intermittent/Erratic
- P2583 Cruise Control Front Distance Range Sensor Single Sensor or Center
- P2584 Fuel Additive Control Module Requested MIL Illumination
- P2585 Fuel Additive Control Module Warning Lamp Request
- P2586 Turbocharger Boost Control Position Sensor B Circuit
- P2587 Turbocharger Boost Control Position Sensor B Circuit Range/Performance
- P2588 Turbocharger Boost Control Position Sensor B Circuit Low
- P2589 Turbocharger Boost Control Position Sensor B Circuit High
- P258A Vacuum Pump Control Circuit A/Open
- P258B Vacuum Pump Control Circuit A Range/Performance
- P258C Vacuum Pump Control Circuit A Low
- P258D Vacuum Pump Control Circuit A High
- P258E PTO Enable Switch Performance
- P258F Torque Management Request Output Signal
- P2590 Turbocharger Boost Control Position Sensor B Circuit Intermittent/Erratic
- P2591 Cruise Control Front Distance Range Sensor Left
- P2592 Cruise Control Front Distance Range Sensor Right
- P2593 Turbocharger Speed Sensor B Circuit
- P2594 Turbocharger Speed Sensor B Circuit Range/Performance
- P2595 Turbocharger Speed Sensor B Circuit Low
- P2596 Turbocharger Speed Sensor B Circuit High
- P2597 Turbocharger Speed Sensor B Circuit Intermittent
- P2598 Turbocharger Boost Control Position Sensor A Performance - Stuck Low
- P2599 Turbocharger Boost Control Position Sensor A Performance - Stuck High
- P259A Turbocharger Boost Control Position Sensor B Performance - Stuck Low
- P259B Turbocharger Boost Control Position Sensor B Performance - Stuck High
- P259C Excessive Time To Enter Closed Loop Turbocharger A Boost Control
- P259D Excessive Time To Enter Closed Loop Turbocharger B Boost Control
- P259E Turbocharger A Boost Control Position At Low Limit
- P259F Turbocharger A Boost Control Position At High Limit
- P25A0 Turbocharger B Boost Control Position At Low Limit
- P25A1 Turbocharger B Boost Control Position At High Limit
- P25A2 Brake System Control Module A Requested MIL Illumination
- P25A3 Engine Hood Open
- P25A4 Fuel Mode Select Switch Circuit
- P25A5 Fuel Mode Select Switch Performance
- P25A6 Fuel Mode Select Switch Circuit Low
- P25A7 Fuel Mode Select Switch Circuit High
- P25A8 Fuel Mode Select Switch Circuit Intermittent/Erratic
- P25A9 Piston Cooling Oil Control Circuit/Open
- P25AA Piston Cooling Oil Control Circuit Low
- P25AB Piston Cooling Oil Control Circuit High
- P25AC Piston Cooling Oil Control Circuit Performance/Stuck Off
- P25AD Piston Cooling Oil Control Circuit Stuck On
- P25AE Piston Cooling Oil Pressure Too Low
- P25AF Coolant Temperature Control Module Requested MIL Illumination
- P25B0 Fuel Level Sensor A Stuck
- P25B1 Fuel Level Sensor B Stuck
- P25B2 Fuel Level Sensor A or B Stuck
- P25B3 Turbocharger/Supercharger Wastegate A Stuck Open
- P25B4 Turbocharger/Supercharger Wastegate A Stuck Closed
- P25B5 Turbocharger/Supercharger Wastegate B Stuck Open
- P25B6 Turbocharger/Supercharger Wastegate B Stuck Closed
- P25B7 Auxiliary Ignition Switch Run/Start Position Circuit
- P25B8 Auxiliary Ignition Switch On/Start Position Circuit Low
- P25B9 Auxiliary Ignition Switch On/Start Position Circuit High
- P25BA Regeneration Control Switch Circuit/Open
- P25BB Regeneration Control Switch Circuit Low
- P25BC Regeneration Control Switch Circuit High
- P25BD Unmetered Fuel - Forced Engine Shutdown
- P25BE Alternative Fuel Disable Control Circuit / Open
- P25BF Alternative Fuel Disable Control Circuit High
- P25C0 Alternative Fuel Disable Control Circuit Low
- P25C1 Alternative Fuel Disable Signal Circuit
- P25C2 Alternative Fuel Disable Signal Circuit High
- P25C3 Alternative Fuel Disable Signal Circuit Low
- P25C4 Brake Booster Temperature Sensor A Circuit
- P25C5 Brake Booster Temperature Sensor A Circuit Range/Performance
- P25C6 Brake Booster Temperature Sensor A Circuit Low
- P25C7 Brake Booster Temperature Sensor A Circuit High
- P25C8 Brake Booster Temperature Sensor A Circuit Intermittent/Erratic
- P25C9 Brake System Control Module B Requested MIL Illumination
- P25CA Intake Camshaft Actuator Park Lock Control Circuit / Open Bank 1
- P25CB Intake Camshaft Actuator Park Lock Control Circuit Low Bank 1
- P25CC Intake Camshaft Actuator Park Lock Control Circuit High Bank 1
- P25CD Intake Camshaft Actuator Park Lock Control Circuit / Open Bank 2
- P25CE Intake Camshaft Actuator Park Lock Control Circuit Low Bank 2
- P25CF Intake Camshaft Actuator Park Lock Control Circuit High Bank 2
- P25D0 Exhaust Camshaft Actuator Park Lock Control Circuit / Open Bank 1
- P25D1 Exhaust Camshaft Actuator Park Lock Control Circuit Low Bank 1
- P25D2 Exhaust Camshaft Actuator Park Lock Control Circuit High Bank 1
- P25D3 Exhaust Camshaft Actuator Park Lock Control Circuit / Open Bank 2
- P25D4 Exhaust Camshaft Actuator Park Lock Control Circuit Low Bank 2
- P25D5 Exhaust Camshaft Actuator Park Lock Control Circuit High Bank 2
- P25D6 Exhaust Heat Exchanger Exhaust Bypass Valve Position Sensor Stop Performance
- P25D7 Fuel Level Sensor C Circuit
- P25D8 Fuel Level Sensor C Performance
- P25D9 Fuel Level Sensor C Circuit Low
- P25DA Fuel Level Sensor C Circuit High
- P25DB Fuel Level Sensor C Circuit Intermittent
- P25DC Fuel Level Sensor C Stuck
- P25DD A Camshaft Position - Stuck In Locked Position Bank 1
- P25DE A Camshaft Position - Unable to Achieve Locked Position Bank 1
- P25DF A Camshaft Position Control Performance Bank 1
- P25E0 A Camshaft Position - Stuck In Locked Position Bank 2
- P25E1 A Camshaft Position - Unable to Achieve Locked Position Bank 2
- P25E2 A Camshaft Position Control Performance Bank 2
- P25E3 B Camshaft Position - Stuck In Locked Position Bank 1
- P25E4 B Camshaft Position - Unable to Achieve Locked Position Bank 1
- P25E5 B Camshaft Position Control Performance Bank 1
- P25E6 B Camshaft Position - Stuck In Locked Position Bank 2
- P25E7 B Camshaft Position - Unable to Achieve Locked Position Bank 2
- P25E8 B Camshaft Position Control Performance Bank 2
- P25E9 Supercharger Disconnect Clutch Stuck Open
- P25EA Supercharger Disconnect Clutch Stuck Closed
- P25EB Supercharger Disconnect Clutch Circuit Range/Performance
- P25EC Supercharger Disconnect Clutch Circuit Low
- P25ED Supercharger Disconnect Clutch Circuit High
- P25EE Vacuum Pump Control Circuit B / Open
- P25EF Vacuum Pump Control Circuit B Range/Performance
- P25F0 Vacuum Pump Control Circuit B Low
- P25F1 Vacuum Pump Control Circuit B High
- P25F2 Turbocharger/Supercharger Boost Sensor C Circuit
- P25F3 Turbocharger/Supercharger Boost Sensor C Circuit Range/Performance
- P25F4 Turbocharger/Supercharger Boost Sensor C Circuit Low
- P25F5 Turbocharger/Supercharger Boost Sensor C Circuit High
- P25F6 AIR System B
- P25F7 AIR System B Incorrect Flow Detected
- P25F8 Turbocharger/Supercharger Bypass Valve C Control Circuit
- P25F9 Turbocharger/Supercharger Bypass Valve C Control Circuit Low
- P25FA Turbocharger/Supercharger Bypass Valve C Control Circuit High
- P25FB Turbocharger/Supercharger Bypass Valve C Control Circuit Range/Performance
- P25FC Turbocharger/Supercharger Bypass Valve C - Mechanical
- P25FD Turbocharger/Supercharger Bypass Valve C Temperature Too High
- P25FE Supercharger Disconnect Clutch
- P25FF Electrical System Voltage Stabilizer Control Module Performance