P24A1: The closed loop particulate filter regeneration control in the limit
The closed loop particulate filter regeneration control in the limit temperature gives a higher signal than normal. It is usually the part, its wiring or a connector with poor contact.
| Code | P24A1 |
|---|---|
| System | Engine and transmission |
| Group | P24xx, EGR, EVAP and particulate filter |
| Type | Generic: it means the same on every make |
How to read and clear P24A1 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P24A1 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P249D The closed loop AdBlue injection control in the limit flow gives a lower signal
- P249E The closed loop AdBlue injection control in the limit flow gives a higher
- P249F The particulate filter regeneration control takes too long to enter closed loop
- P24A0 The closed loop particulate filter regeneration control in the limit
- P24A2 The diesel particulate filter has not completed its regeneration
- P24A7 The EGR cooler coolant pump control has a broken or disconnected wire
- P24A8 The EGR cooler coolant pump has got stuck
- P24A9 The EGR cooler coolant pump control gives a lower signal than normal
- P2400 EVAP leak detection pump control circuit open or faulty
- P2413 Exhaust gas recirculation (EGR) system performance
- P2414 O2 sensor exhaust sample error (bank 1, sensor 1)
- P2425 EGR cooler valve control circuit open or faulty
What does code P24A1 mean?
The closed loop particulate filter regeneration control in the limit temperature gives a higher signal than normal. It is usually the part, its wiring or a connector with poor contact.
How do you clear P24A1?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P24A1 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
