P0242: The turbocharger boost sensor B gives a higher signal than normal
The turbocharger boost sensor B gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P0242 |
|---|---|
| System | Engine and transmission |
| Group | P02xx, Fuel and injectors |
| Type | Generic: it means the same on every make |
How to read and clear P0242 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 P0242 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
- P023E The manifold absolute pressure turbocharger boost sensor B gives readings that
- P023F The fuel pump secondary circuit is open
- P0240 The turbocharger boost sensor B gives readings outside the normal range
- P0241 The turbocharger boost sensor B gives a lower signal than normal
- P0243 Turbo wastegate solenoid A: circuit fault
- P0244 The turbocharger wastegate solenoid A gives readings outside the normal range
- P0245 Turbo wastegate solenoid A: low signal
- P0246 Turbo wastegate solenoid A: high signal
- P0200 Injector circuit malfunction
- P0201 Injector circuit malfunction, cylinder 1
- P0202 Injector circuit malfunction, cylinder 2
- P0203 Injector circuit malfunction, cylinder 3
What does code P0242 mean?
The turbocharger boost sensor B gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P0242?
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, P0242 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.
