P049F: The exhaust pressure control valve B is not working properly
The exhaust pressure control valve B is not working properly. It may be the part itself, its connector or the wiring.
| Code | P049F |
|---|---|
| System | Engine and transmission |
| Group | P04xx, Emissions control |
| Type | Generic: it means the same on every make |
How to read and clear P049F 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 P049F 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
- P049B The EGR B exhaust gas recirculation flow is insufficient
- P049C The EGR valve actuator B allows excessive exhaust gas flow
- P049D The exhaust gas recirculation A control position needs its learning procedure
- P049E The exhaust gas recirculation B control position needs its learning procedure
- P04A0 The exhaust pressure control valve B gives readings outside the normal range
- P04A1 The exhaust pressure control valve B gives a lower signal than normal
- P04A2 The exhaust pressure control valve B gives a higher signal than normal
- P04A3 The exhaust pressure control valve B fails now and then
- P0400 Exhaust gas recirculation (EGR) flow malfunction
- P0401 Exhaust gas recirculation (EGR) flow insufficient
- P0402 Exhaust gas recirculation (EGR) flow excessive
- P0403 EGR control circuit malfunction
What does code P049F mean?
The exhaust pressure control valve B is not working properly. It may be the part itself, its connector or the wiring.
How do you clear P049F?
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, P049F 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.
