P25xx codes — Auxiliary inputs
108 generic powertrain trouble codes from P2500 to P25BA. Each links to its page: what it means, how serious it is, and how to fix it.
- P2500Generator Lamp/L-Terminal Circuit Low
- P2501Generator Lamp/L-Terminal Circuit High
- P2502Charging System Voltage
- P2503Charging System Voltage Low
- P2504Charging System Voltage High
- P2505ECM/PCM Power Input Signal
- P2506ECM/PCM Power Input Signal Range/Performance
- P2507ECM/PCM Power Input Signal Low
- P2508ECM/PCM Power Input Signal High
- P2509ECM/PCM Power Input Signal Intermittent
- P2510ECM/PCM Power Relay Sense Circuit Range/Performance
- P2511ECM/PCM Power Relay Sense Circuit Intermittent
- P2512Event Data Recorder Request Circuit/Open
- P2513Event Data Recorder Request Circuit Low
- P2514Event Data Recorder Request Circuit High
- P2515A/C Refrigerant Pressure Sensor B Circuit
- P2516A/C Refrigerant Pressure Sensor B Circuit Range/Performance
- P2517A/C Refrigerant Pressure Sensor B Circuit Low
- P2518A/C Refrigerant Pressure Sensor B Circuit High
- P2519A/C Request A Circuit
- P251EPTO Engine Shutdown Circuit Low
- P2520A/C Request A Circuit Low
- P2521A/C Request A Circuit High
- P2522A/C Request B Circuit
- P2523A/C Request B Circuit Low
- P2524A/C Request B Circuit High
- P2525Vacuum Reservoir Pressure Sensor Circuit
- P2526Vacuum Reservoir Pressure Sensor Circuit Range/Performance
- P2527Vacuum Reservoir Pressure Sensor Circuit Low
- P2528Vacuum Reservoir Pressure Sensor Circuit High
- P2529Vacuum Reservoir Pressure Sensor Circuit Intermittent
- P2530Ignition Switch Run Position Circuit
- P2531Ignition Switch Run Position Circuit Low
- P2532Ignition Switch Run Position Circuit High
- P2533Ignition Switch On/Start Position Circuit
- P2534Ignition Switch On/Start Position Circuit Low
- P2535Ignition Switch On/Start Position Circuit High
- P2536Ignition Switch Accessory Position Circuit
- P2537Ignition Switch Accessory Position Circuit Low
- P2538Ignition Switch Accessory Position Circuit High
- P2539Low Pressure Fuel System Sensor Circuit
- P2540Low Pressure Fuel System Sensor Circuit Range/Performance
- P2541Low Pressure Fuel System Sensor Circuit Low
- P2542Low Pressure Fuel System Sensor Circuit High
- P2543Low Pressure Fuel System Sensor Circuit Intermittent
- P2544Torque Management Request Input Signal A
- P2545Torque Management Request Input Signal A Range/Performance
- P2546Torque Management Request Input Signal A Low
- P2547Torque Management Request Input Signal A High
- P2548Torque Management Request Input Signal B
- P2549Torque Management Request Input Signal B Range/Performance
- P2550Torque Management Request Input Signal B Low
- P2551Torque Management Request Input Signal B High
- P2552Throttle/Fuel Inhibit A Circuit
- P2553Throttle/Fuel Inhibit A Circuit Range/Performance
- P2554Throttle/Fuel Inhibit A Circuit Low
- P2555Throttle/Fuel Inhibit A Circuit High
- P2556Engine Coolant Level Sensor/Switch Circuit
- P2557Engine Coolant Level Sensor/Switch Circuit Range/Performance
- P2558Engine Coolant Level Sensor/Switch Circuit Low
- P2559Engine Coolant Level Sensor/Switch Circuit High
- P2560Engine Coolant Level Low
- P2561A/C Control Module Requested MIL Illumination
- P2562Turbocharger Boost Control Position Sensor A Circuit
- P2563Turbocharger Boost Control Position Sensor A Circuit Range/Performance
- P2564Turbocharger Boost Control Position Sensor A Circuit Low
- P2565Turbocharger Boost Control Position Sensor A Circuit High
- P2566Turbocharger Boost Control Position Sensor A Circuit Intermittent
- P2567Direct Ozone Reduction Catalyst Temperature Sensor Circuit
- P2568Direct Ozone Reduction Catalyst Temperature Sensor Circuit Range/Performance
- P2569Direct Ozone Reduction Catalyst Temperature Sensor Circuit Low
- P2570Direct Ozone Reduction Catalyst Temperature Sensor Circuit High
- P2571Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/Erratic
- P2572Direct Ozone Reduction Catalyst Deterioration Sensor Circuit
- P2573Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Range/Performance
- P2574Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low
- P2575Direct Ozone Reduction Catalyst Deterioration Sensor Circuit High
- P2576Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/Erratic
- P2577Direct Ozone Reduction Catalyst Efficiency Below Threshold
- P2578Turbocharger/Supercharger Speed Sensor A Circuit
- P2579Turbocharger/Supercharger Speed Sensor A Circuit Range/Performance
- P257AVacuum Reservoir Control Circuit/Open
- P257BVacuum Reservoir Control Circuit Low
- P257CVacuum Reservoir Control Circuit High
- P257DEngine Hood Switch Circuit Range/Performance
- P257EEngine Hood Switch Circuit Low
- P257FEngine Hood Switch Circuit High
- P2580Turbocharger/Supercharger Speed Sensor A Circuit Low
- P2581Turbocharger/Supercharger Speed Sensor A Circuit High
- P2582Turbocharger/Supercharger Speed Sensor A Circuit Intermittent
- P2583Cruise Control Front Distance Range Sensor Single Sensor or Center
- P2584Fuel Additive Control Module Requested MIL Illumination
- P2585Fuel Additive Control Module Warning Lamp Request
- P2586Turbocharger Boost Control Position Sensor B Circuit
- P2587Turbocharger Boost Control Position Sensor B Circuit Range/Performance
- P2588Turbocharger Boost Control Position Sensor B Circuit Low
- P2589Turbocharger Boost Control Position Sensor B Circuit High
- P258AVacuum Pump Control Circuit A/Open
- P258BVacuum Pump Control Circuit A Range/Performance
- P258CVacuum Pump Control Circuit A Low
- P258DVacuum Pump Control Circuit A High
- P258EPTO Enable Switch Performance
- P258FTorque Management Request Output Signal
- P2590Turbocharger Boost Control Position Sensor B Circuit Intermittent/Erratic
- P2591Cruise Control Front Distance Range Sensor Left
- P2592Cruise Control Front Distance Range Sensor Right
- P2598Turbocharger Boost Control Position Sensor A Performance - Stuck Low
- P25BARegeneration Control Switch Circuit/Open