P048B: The exhaust pressure control valve position sensor has an electrical fault
The exhaust pressure control valve position sensor has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P048B |
|---|---|
| System | Engine and transmission |
| Group | P04xx, Emissions control |
| Type | Generic: it means the same on every make |
How to read and clear P048B 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 P048B 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
- P0487 The exhaust gas recirculation throttle position control has an electrical fault
- P0488 The exhaust gas recirculation throttle position control gives readings outside
- P0489 Low signal in the EGR valve control
- P048A The exhaust pressure control valve A has got stuck
- P048C The exhaust pressure control valve position sensor gives readings outside the
- P048D The exhaust pressure control valve position sensor gives a lower signal than
- P048E The exhaust pressure control valve position sensor gives a higher signal than
- P048F The exhaust pressure control valve position sensor 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 P048B mean?
The exhaust pressure control valve position sensor has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P048B?
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, P048B 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.
