Fault codes P24xx: canister, particulate filter and EGR
Engine and transmission codes common to all makes (SAE J2012 standard).
Official codes: 256, from smallest to largest. Tap a code to get a direct link to share.
| Code | Meaning |
|---|---|
| P2400 | EVAP Leak Detection Pump Control Circuit Open |
| P2401 | EVAP Leak Detection Pump Control Circuit Low |
| P2402 | EVAP Leak Detection Pump Control Circuit High |
| P2403 | EVAP System Leak Detection Pump Sense Circuit Open |
| P2404 | EVAP Leak Detection Pump Sense Circuit Range/Performance |
| P2405 | EVAP System Leak Detection Pump Sense Circuit Low |
| P2406 | EVAP System Leak Detection Pump Sense Circuit High |
| P2407 | EVAP Leak Detection Pump Sense Circuit Range/Performance |
| P2408 | Fuel Cap Sensor/Switch Circuit Range/Performance |
| P2409 | Fuel Cap Sensor or Switch Circuit Range or Performance |
| P240A | EVAP System Leak Detection Pump Heater Control Circuit Open |
| P240B | EVAP System Leak Detection Pump Heater Control Circuit Low |
| P240C | EVAP System Leak Detection Pump Heater Control Circuit High |
| P240D | Alternative Fuel Low Pressure System Leak |
| P240E | Alternative Fuel High Pressure System Leak |
| P240F | EGR Slow Response |
| P2410 | Fuel Cap Sensor/Switch Stuck |
| P2411 | Fuel Cap Sensor/Switch Circuit |
| P2412 | Fuel Cap Sensor or Switch Circuit Intermittent or Erratic |
| P2413 | Exhaust Gas Recirculation System Performance |
| P2414 | O2 Sensor Exhaust Sample Error Bank 1 Sensor 1 |
| P2415 | EVAP Switching Valve Circuit Open |
| P2416 | EVAP Switching Valve Performance |
| P2417 | EVAP Switching Valve Stuck Closed |
| P2418 | EVAP Switching Valve Control Circuit Performance |
| P2419 | EVAP Switching Valve Stuck Open |
| P241A | O2 Sensor Signals Swapped Bank 1 Sensor 1 and Sensor 2 |
| P241B | O2 Sensor Signals Swapped Bank 2 Sensor 1 and Sensor 2 |
| P241C | Throttle Actuator Control System Ice Blockage Bank 2 |
| P241D | SCR Inducement Forced Engine Shutdown |
| P241E | Reductant Heater Coolant Control Valve Stuck Closed |
| P241F | EGR Cooler B Efficiency Below Threshold |
| P2420 | EVAP Switching Valve Stuck Closed |
| P2421 | EVAP Vent Valve Stuck Open |
| P2422 | EVAP Canister Vent Valve Stuck Closed |
| P2423 | HC Adsorption Catalyst Efficiency Below Threshold Bank 1 |
| P2424 | HC Adsorption Catalyst Efficiency Below Threshold Bank 2 |
| P2425 | EGR Cooling Valve Control Circuit Open |
| P2426 | EGR Cooling Valve Control Circuit Low |
| P2427 | EGR Cooling Valve Control Circuit High |
| P2428 | Exhaust Gas Temperature Too High Bank 1 |
| P2429 | Exhaust Gas Temperature Too High Bank 2 |
| P242A | Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3 |
| P242B | Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 1 Sensor 3 |
| P242C | Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3 |
| P242D | Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3 |
| P242E | Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 1 Sensor 3 |
| P242F | Particulate Filter Restriction Ash Accumulation Bank 1 |
| P2430 | AIR System Air Flow or Pressure Sensor Circuit Bank 1 |
| P2431 | Secondary Air Injection System Air Flow/Pressure Sensor Circuit |
| P2432 | Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance |
| P2433 | AIR System Air Flow or Pressure Sensor Circuit High Bank 1 |
| P2434 | AIR System Air Flow or Pressure Sensor Circuit Intermittent or Erratic Bank 1 |
| P2435 | AIR System Air Flow or Pressure Sensor Circuit Bank 2 |
| P2436 | AIR System Air Flow or Pressure Sensor Circuit Range or Performance Bank 2 |
| P2437 | AIR System Air Flow or Pressure Sensor Circuit Low Bank 2 |
| P2438 | AIR System Air Flow or Pressure Sensor Circuit High Bank 2 |
| P2439 | AIR System Air Flow or Pressure Sensor Circuit Intermittent or Erratic Bank 2 |
| P243A | Particulate Filter Restriction Ash Accumulation Bank 2 |
| P243B | Particulate Filter Restriction Forced Limited Power Bank 2 |
| P243C | Particulate Filter Regeneration Frequency Bank 2 |
| P243D | Particulate Filter Regeneration Duration Bank 2 |
| P243E | Particulate Filter Regeneration Incomplete Bank 2 |
| P243F | Particulate Filter Restriction Soot Accumulation Too High Bank 2 |
| P2440 | Secondary Air Injection System Switching Valve Stuck Open (Bank 1) |
| P2441 | Secondary Air Injection System Switching Valve Stuck Closed (Bank 1) |
| P2442 | Secondary Air Injection System Switching Valve Stuck Open (Bank 2) |
| P2443 | Secondary Air Injection System Switching Valve Stuck Closed (Bank 2) |
| P2444 | Secondary Air Injection System Pump Stuck Off (Bank 1) |
| P2445 | Secondary Air Injection System Pump Stuck On (Bank 1) |
| P2446 | Secondary Air Injection Pump Stuck Off (Bank 2) |
| P2447 | Secondary Air Injection Pump Stuck On (Bank 2) |
| P2448 | AIR System High Air Flow Bank 1 |
| P2449 | AIR System High Air Flow Bank 2 |
| P244A | Diesel Particulate Filter Differential Pressure Too Low |
| P244B | Diesel Particulate Filter Differential Pressure Sensor Offset |
| P244C | Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1 |
| P244D | Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1 |
| P244E | Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 2 |
| P244F | Exhaust Temperature Too High For Particulate Filter Regeneration Bank 2 |
| P2450 | EVAP System Switching Valve Performance/Stuck |
| P2451 | EVAP System Switching Valve Stuck Closed |
| P2452 | Diesel Particulate Filter Pressure Sensor Circuit |
| P2453 | Diesel Particulate Filter Pressure Sensor Circuit Range/Performance |
| P2454 | Diesel Particulate Filter Pressure Sensor Circuit Low |
| P2455 | Diesel Particulate Filter Pressure Sensor Circuit High |
| P2456 | DPF Differential Pressure Sensor Circuit Intermittent |
| P2457 | EGR Cooler Performance |
| P2458 | DPF Regeneration Duration |
| P2459 | Diesel Particulate Filter Regeneration Frequency |
| P245A | EGR Cooler Bypass Control Circuit Open Bank 1 |
| P245B | EGR Cooler Bypass Control Circuit Range or Performance Bank 1 |
| P245C | EGR Cooler Bypass Control Circuit Low Bank 1 |
| P245D | EGR Cooler Bypass Control Circuit High Bank 1 |
| P245E | Particulate Filter Pressure Sensor B Circuit |
| P245F | Particulate Filter Pressure Sensor B Circuit Range or Performance |
| P2460 | DPF Restriction — Forced Limited Power |
| P2461 | DPF Restriction — Forced Limited |
| P2462 | Diesel Particulate Filter Restriction - Soot Accumulation |
| P2463 | Diesel Particulate Filter Restriction — Soot Accumulation |
| P2464 | Diesel Particulate Filter Differential Pressure Too High |
| P2465 | Diesel Particulate Filter Differential Pressure Sensor Range/Performance |
| P2466 | Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3 |
| P2467 | Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 3 |
| P2468 | Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3 |
| P2469 | Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3 |
| P246A | Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 3 |
| P246B | Vehicle Conditions Incorrect for Particulate Filter Regeneration |
| P246C | Particulate Filter Restriction Forced Limited Power Bank 1 |
| P246D | Particulate Filter Pressure Sensor A and B Correlation |
| P246E | Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4 |
| P246F | Reductant System Cold Start Performance |
| P2470 | Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 3 |
| P2471 | Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3 |
| P2472 | Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3 |
| P2473 | Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3 |
| P2474 | Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 4 |
| P2475 | Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 4 |
| P2476 | Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4 |
| P2477 | Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 4 |
| P2478 | Exhaust Gas Temperature Out of Range Bank 1 Sensor 1 |
| P2479 | Exhaust Gas Temperature Out of Range Bank 1 Sensor 2 |
| P247A | Exhaust Gas Temperature Out of Range Bank 1 Sensor 3 |
| P247B | Exhaust Gas Temperature Out of Range Bank 1 Sensor 4 |
| P247C | Exhaust Gas Temperature Out of Range Bank 2 Sensor 1 |
| P247D | Exhaust Gas Temperature Out of Range Bank 2 Sensor 2 |
| P247E | Exhaust Gas Temperature Out of Range Bank 2 Sensor 3 |
| P247F | Exhaust Gas Temperature Out of Range Bank 2 Sensor 4 |
| P2480 | Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3 |
| P2481 | Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5 |
| P2482 | Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5 |
| P2483 | Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 1 Sensor 5 |
| P2484 | Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 1 Sensor 5 |
| P2485 | Exhaust Gas Temperature Sensor Circuit Open Bank 2 Sensor 5 |
| P2486 | Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 5 |
| P2487 | Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5 |
| P2488 | Exhaust Gas Temperature Sensor Circuit Range or Performance Bank 2 Sensor 5 |
| P2489 | Exhaust Gas Temperature Sensor Circuit Intermittent or Erratic Bank 2 Sensor 5 |
| P248A | Reductant Heater A Sense Circuit Low |
| P248B | Reductant Heater A Sense Circuit High |
| P248C | Reductant Heater B Sense Circuit Low |
| P248D | Reductant Heater B Sense Circuit High |
| P248E | EGR Cooler Bypass Control Circuit Open Bank 2 |
| P248F | EGR Cooler Bypass Control Circuit Range or Performance Bank 2 |
| P2490 | EGR Cooler Bypass Control Circuit Low Bank 2 |
| P2491 | EGR Cooler Bypass Control Circuit High Bank 2 |
| P2492 | EGR Cooler Bypass Position Sensor Circuit Bank 1 |
| P2493 | EGR Cooler Bypass Position Sensor Range or Performance Bank 1 |
| P2494 | EGR Cooler Bypass Position Sensor Circuit Low Bank 1 |
| P2495 | EGR Cooler Bypass Position Sensor Circuit High Bank 1 |
| P2496 | EGR Cooler Bypass Position Sensor Circuit Intermittent or Erratic Bank 1 |
| P2497 | EGR Cooler Bypass Position Sensor Circuit Bank 2 |
| P2498 | EGR Cooler Bypass Position Sensor Range or Performance Bank 2 |
| P2499 | EGR Cooler Bypass Position Sensor Circuit Low Bank 2 |
| P249A | EGR Cooler Bypass Position Sensor Circuit High Bank 2 |
| P249B | EGR Cooler Bypass Position Sensor Circuit Intermittent or Erratic Bank 2 |
| P249C | Excessive Time To Enter Closed Loop Reductant Injection Control |
| P249D | Closed Loop Reductant Injection Control At Limit Flow Too Low |
| P249E | Closed Loop Reductant Injection Control At Limit Flow Too High |
| P249F | Excessive Time To Enter Closed Loop Particulate Filter Regeneration Control |
| P24A0 | Closed Loop Particulate Filter Regeneration Control At Limit Temperature Too Low |
| P24A1 | Closed Loop Particulate Filter Regeneration Control At Limit Temperature Too High |
| P24A2 | Particulate Filter Regeneration Incomplete Bank 1 |
| P24A3 | Particulate Filter Restriction Soot Accumulation Bank 2 |
| P24A4 | Particulate Filter Restriction Soot Accumulation Too High Bank 1 |
| P24A5 | EGR Cooler Bypass Control Stuck Open Bank 1 |
| P24A6 | EGR Cooler Bypass Control Stuck Open Bank 2 |
| P24A7 | EGR Cooler Coolant Pump Control Circuit Open |
| P24A8 | EGR Cooler Coolant Pump Performance Stuck Off |
| P24A9 | EGR Cooler Coolant Pump Control Circuit Low |
| P24AA | EGR Cooler Coolant Pump Control Circuit High |
| P24AB | EGR Cooler Coolant Pump Stuck On |
| P24AC | EGR Cooler Coolant Pump Feedback Circuit Low |
| P24AD | EGR Cooler Coolant Pump Feedback Circuit High |
| P24AE | Particulate Matter Sensor Circuit |
| P24AF | Particulate Matter Sensor Circuit Range or Performance |
| P24B0 | Particulate Matter Sensor Circuit Low |
| P24B1 | Particulate Matter Sensor Circuit High |
| P24B2 | Particulate Matter Sensor Circuit Intermittent |
| P24B3 | Particulate Matter Sensor Heater Control Circuit Open |
| P24B4 | Particulate Matter Sensor Heater Control Circuit Range or Performance |
| P24B5 | Particulate Matter Sensor Heater Control Circuit Low |
| P24B6 | Particulate Matter Sensor Heater Control Circuit High |
| P24B7 | Particulate Matter Sensor Heater Resistance |
| P24B8 | EVAP System Leak Detection Pump Pressure Sensor Circuit |
| P24B9 | EVAP System Leak Detection Pump Pressure Sensor Circuit Range or Performance |
| P24BA | EVAP System Leak Detection Pump Pressure Sensor Circuit Low |
| P24BB | EVAP System Leak Detection Pump Pressure Sensor Circuit High |
| P24BC | EVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent |
| P24BD | EVAP System Leak Detection Pump Switching Valve Control Circuit Open |
| P24BE | EVAP System Leak Detection Pump Switching Valve Control Circuit Low |
| P24BF | EVAP System Leak Detection Pump Switching Valve Control Circuit High |
| P24C0 | EVAP System Leak Detection Pump Switching Valve Stuck On |
| P24C1 | EVAP System Leak Detection Pump Switching Valve Performance Stuck Off |
| P24C2 | Exhaust Gas Temperature Measurement System Multiple Sensor Correlation Bank 1 |
| P24C3 | Exhaust Gas Temperature Measurement System Multiple Sensor Correlation Bank 2 |
| P24C4 | EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1 |
| P24C5 | EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 2 |
| P24C6 | Particulate Matter Sensor Temperature Circuit |
| P24C7 | Particulate Matter Sensor Temperature Circuit Range or Performance |
| P24C8 | Particulate Matter Sensor Temperature Circuit Low |
| P24C9 | Particulate Matter Sensor Temperature Circuit High |
| P24CA | Particulate Matter Sensor Temperature Circuit Intermittent |
| P24CB | Reductant Tank Cap Switch Circuit |
| P24CC | Reductant Tank Cap Switch Circuit Range or Performance |
| P24CD | Reductant Tank Cap Switch Circuit Low |
| P24CE | Reductant Tank Cap Switch Circuit High |
| P24CF | Reductant Tank Cap Switch Circuit Intermittent or Erratic |
| P24D0 | Particulate Matter Sensor Supply Voltage Circuit Low |
| P24D1 | Particulate Matter Sensor Regeneration Incomplete |
| P24D2 | Reductant Heater A Sense Circuit |
| P24D3 | Reductant Heater B Sense Circuit |
| P24D4 | EGR Cooler Coolant Pump Feedback Circuit |
| P24D5 | EVAP System Pressure Sensor or Switch B Circuit |
| P24D6 | EVAP System Pressure Sensor or Switch B Circuit Range or Performance |
| P24D7 | EVAP System Pressure Sensor or Switch B Circuit Low |
| P24D8 | EVAP System Pressure Sensor or Switch B Circuit High |
| P24D9 | EVAP System Pressure Sensor or Switch B Circuit Intermittent |
| P24DA | Particulate Matter Sensor Exhaust Sample Error Bank 1 |
| P24DB | Reductant Purge Control Valve B Circuit Open |
| P24DC | Reductant Purge Control Valve B Performance |
| P24DD | Reductant Purge Control Valve B Circuit Low |
| P24DE | Reductant Purge Control Valve B Circuit High |
| P24DF | Reductant Purge Control Valve B Stuck Open |
| P24E0 | Reductant Purge Control Valve B Stuck Closed |
| P24E1 | NH3 Sensor Circuit |
| P24E2 | NH3 Sensor Circuit Range or Performance |
| P24E3 | NH3 Sensor Circuit Low |
| P24E4 | NH3 Sensor Circuit High |
| P24E5 | NH3 Sensor Circuit Intermittent/Erratic |
| P24E6 | NH3 Sensor Heater Circuit/Open |
| P24E7 | NH3 Sensor Heater Circuit Low |
| P24E8 | NH3 Sensor Heater Circuit High |
| P24E9 | NH3 Sensor Heater Circuit Performance |
| P24EA | NH3 Sensor Supply Voltage Circuit |
| P24EB | NH3 Sensor Supply Voltage Circuit Low |
| P24EC | NH3 Sensor Supply Voltage Circuit High |
| P24ED | NH3 Sensor Calibration Memory |
| P24EE | NH3 Sensor Processor Performance |
| P24EF | Control Module Wake-up Circuit/Open |
| P24F0 | Control Module Wake-up Circuit Low |
| P24F1 | Control Module Wake-up Circuit High |
| P24F2 | EGR Temperature/Charge Air Cooler Temperature Correlation |
| P24F3 | Reductant Tank Temperature/Fuel Temperature Correlation |
| P24F4 | NOx Sensor Delayed Response - High to Low Bank 1 Sensor 1 |
| P24F5 | NOx Sensor Delayed Response - High to Low Bank 1 Sensor 2 |
| P24F6 | Exhaust Aftertreatment Fuel Air Purge Valve Stuck Open |
| P24F7 | Exhaust Aftertreatment Fuel Air Purge Valve Stuck Closed |
| P24F8 | Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit |
| P24F9 | Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Range/Performance |
| P24FA | Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low |
| P24FB | Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit High |
| P24FC | Particulate Matter Sensor Heater Control Circuit Driver Current/Temperature Too High |
| P24FD | Particulate Filter A Incorrect |
| P24FE | SCR Catalyst Incorrect |
| P24FF | Reductant Temperature Too High |
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Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.