P24xx codes — Auxiliary emission controls
126 generic powertrain trouble codes from P2400 to P24DB. Each links to its page: what it means, how serious it is, and how to fix it.
- P2400EVAP System Leak Detection Pump Control Circuit/Open
- P2401EVAP System Leak Detection Pump Control Circuit Low
- P2402EVAP System Leak Detection Pump Control Circuit High
- P2403EVAP System Leak Detection Pump Sense Circuit/Open
- P2404EVAP System Leak Detection Pump Sense Circuit Range/Performance
- P2405EVAP System Leak Detection Pump Sense Circuit Low
- P2406EVAP System Leak Detection Pump Sense Circuit High
- P2407EVAP System Leak Detection Pump Sense Circuit Intermittent/Erratic
- P2408Fuel Cap Sensor/Switch Circuit
- P2409Fuel Cap Sensor/Switch Circuit Range/Performance
- P2410Fuel Cap Sensor/Switch Circuit Low
- P2411Fuel Cap Sensor/Switch Circuit High
- P2412Fuel Cap Sensor/Switch Circuit Intermittent/Erratic
- P2413EGR System Performance
- P2414O2 Sensor Exhaust Sample Error Bank 1 Sensor 1
- P2415O2 Sensor Exhaust Sample Error Bank 2 Sensor 1
- P2416O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 1 Sensor 3
- P2417O2 Sensor Signals Swapped Bank 2 Sensor 2/Bank 2 Sensor 3
- P2418EVAP System Switching Valve Control Circuit/Open
- P2419EVAP System Switching Valve Control Circuit Low
- P241DSCR system performance issue - forced engine shutdown
- P2420EVAP System Switching Valve Control Circuit High
- P2421EVAP System Vent Valve Stuck Open
- P2422EVAP System Vent Valve Stuck Closed
- P2423HC Adsorption Catalyst Efficiency Below Threshold Bank 1
- P2424HC Adsorption Catalyst Efficiency Below Threshold Bank 2
- P2425EGR Cooling Valve Control Circuit/Open
- P2426EGR Cooling Valve Control Circuit Low
- P2427EGR Cooling Valve Control Circuit High
- P2428Exhaust Gas Temperature Too High Bank 1
- P2429Exhaust Gas Temperature Too High Bank 2
- P242AExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3
- P242BExhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 3)
- P242CExhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
- P242DExhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 3)
- P242FParticulate Filter Restriction - Ash Accumulation Bank 1
- P2430AIR System Air Flow/Pressure Sensor Circuit Bank 1
- P2431AIR System Air Flow/Pressure Sensor Circuit Range/Performance Bank 1
- P2432AIR System Air Flow/Pressure Sensor Circuit Low Bank 1
- P2433AIR System Air Flow/Pressure Sensor Circuit High Bank 1
- P2434Secondary Air Injection System Air Flow/Pressure Sensor Circuit Intermittent/Erratic Bank 1
- P2435AIR System Air Flow/Pressure Sensor Circuit Bank 2
- P2436AIR System Air Flow/Pressure Sensor Circuit Range/Performance Bank 2
- P2437AIR System Air Flow/Pressure Sensor Circuit Low Bank 2
- P2438AIR System Air Flow/Pressure Sensor Circuit High Bank 2
- P2439AIR System Air Flow/Pressure Sensor Circuit Intermittent/Erratic Bank 2
- P243FParticulate Filter Restriction - Soot Accumulation Too High Bank 2
- P2440AIR System Switching Valve Stuck Open Bank 1
- P2441AIR System Switching Valve Stuck Closed Bank 1
- P2442AIR System Switching Valve Stuck Open Bank 2
- P2443AIR System Switching Valve Stuck Closed Bank 2
- P2444Secondary Air Injection System Pump Stuck On Bank 1
- P2445AIR System Pump Stuck Off Bank 1
- P2446AIR System Pump Stuck On Bank 2
- P2447AIR System Pump Stuck Off Bank 2
- P2448AIR System High Air Flow Bank 1
- P2449AIR System High Air Flow Bank 2
- P244AParticulate Filter Differential Pressure Too Low Bank 1
- P244BParticulate Filter Differential Pressure Too High Bank 1
- P244CExhaust Temperature Too Low For Particulate Filter Regeneration Bank 1
- P244DExhaust Temperature Too High For Particulate Filter Regeneration Bank 1
- P244EExhaust Temperature Too Low For Particulate Filter Regeneration Bank 2
- P244FExhaust Temperature Too High For Particulate Filter Regeneration Bank 2
- P2450EVAP System Switching Valve Performance/Stuck Open
- P2451EVAP System Switching Valve Stuck Closed
- P2452Particulate Filter Pressure Sensor A Circuit
- P2453Particulate Filter Pressure Sensor A Circuit Range/Performance
- P2454Particulate Filter Pressure Sensor A Circuit Low
- P2455Particulate Filter Pressure Sensor A Circuit High
- P2456Particulate Filter Pressure Sensor A Circuit Intermittent/Erratic
- P2457EGR Cooler A Efficiency Below Threshold
- P2458Particulate Filter Regeneration Duration Bank 1
- P2459Particulate Filter Regeneration Frequency Bank 1
- P245AEGR Cooler Bypass Control Circuit/Open Bank 1
- P245BEGR Cooler Bypass Control Circuit Range/Performance Bank 1
- P245CEGR Cooler Bypass Control Circuit Low Bank 1
- P245DEGR Cooler Bypass Control Circuit High Bank 1
- P245EParticulate Filter Pressure Sensor B Circuit
- P245FParticulate Filter Pressure Sensor B Circuit Range/Performance
- P2460Particulate Filter Pressure Sensor B Circuit Low
- P2461Particulate Filter Pressure Sensor B Circuit High
- P2462Particulate Filter Pressure Sensor B Circuit Intermittent/Erratic
- P2463Particulate Filter Restriction - Soot Accumulation Bank 1
- P2464Particulate Filter Differential Pressure Too Low Bank 2
- P2465Particulate Filter Differential Pressure Too High Bank 2
- P2466Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
- P2467Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 3
- P2468Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3
- P2469Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3
- P246AExhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3
- P246BVehicle Conditions Incorrect for Particulate Filter Regeneration
- P246CParticulate Filter Restriction - Forced Limited Power Bank 1
- P246DParticulate Filter Pressure Sensor A/B Correlation
- P246EExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4
- P246FExhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 4
- P2470Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4
- P2471Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4
- P2472Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 4
- P2473Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 4
- P2474Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
- P2475Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 4
- P2476Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4
- P2477Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
- P2478Exhaust Gas Temperature Out of Range Bank 1 Sensor 1
- P2479Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
- P247AExhaust Gas Temperature Out of Range Bank 1 Sensor 3
- P247BExhaust Gas Temperature Out of Range Bank 1 Sensor 4
- P247CExhaust Gas Temperature Out of Range Bank 2 Sensor 1
- P247DExhaust Gas Temperature Out of Range Bank 2 Sensor 2
- P247EExhaust Gas Temperature Out of Range Bank 2 Sensor 3
- P247FExhaust Gas Temperature Out of Range Bank 2 Sensor 4
- P2480Exhaust Gas Temperature Sensor Circuit/Open Bank 1 Sensor 5
- P2481Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5
- P2482Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5
- P2483Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 5
- P2484Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5
- P2485Exhaust Gas Temperature Sensor Circuit/Open Bank 2 Sensor 5
- P2486Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 5
- P2487Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5
- P2488Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5
- P2489Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5
- P249FTaking too long to Enter Closed Loop Particulate Filter Regeneration Control
- P24A4DPF clogged
- P24B4Particulate Matter Sensor Heater Control Circuit Range/Performanc
- P24C6Particulate Matter Sensor Temperature Circuit
- P24DBReductant Purge Control Valve 'B' Circuit /Open