P047C: The exhaust pressure sensor B gives a lower signal than normal
The exhaust pressure sensor B gives a lower signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P047C |
|---|---|
| System | Engine and transmission |
| Group | P04xx, Emissions control |
| Type | Generic: it means the same on every make |
How to read and clear P047C 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 P047C 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
- P0478 The exhaust pressure control valve gives a higher signal than normal
- P0479 The exhaust pressure control valve fails now and then
- P047A The exhaust pressure sensor B has an electrical fault
- P047B The exhaust pressure sensor B gives readings outside the normal range
- P047D The exhaust pressure sensor B gives a higher signal than normal
- P047E The exhaust pressure sensor B fails now and then
- P047F The exhaust pressure control valve A has got stuck
- P0480 Cooling fan 1 control circuit malfunction
- 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 P047C mean?
The exhaust pressure sensor B gives a lower signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P047C?
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, P047C 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.
