P01B7: The alternative fuel rail temperature sensor gives a higher signal than normal
The alternative fuel rail temperature sensor gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P01B7 |
|---|---|
| System | Engine and transmission |
| Group | P01xx, Air and fuel metering |
| Type | Generic: it means the same on every make |
How to read and clear P01B7 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 P01B7 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
- P01B3 The alternative fuel tank A level sensor fails now and then
- P01B4 The alternative fuel rail temperature sensor has an electrical fault
- P01B5 The alternative fuel rail temperature sensor gives readings outside the normal
- P01B6 The alternative fuel rail temperature sensor gives a lower signal than normal
- P01B8 The alternative fuel rail temperature sensor fails now and then
- P01B9 The engine oil temperature sensor B has an electrical fault
- P01BA The engine oil temperature sensor B gives readings outside the normal range
- P01BB The engine oil temperature sensor B gives a lower signal than normal
- P0100 Mass or volume air flow sensor circuit fault
- P0101 Air flow sensor range or performance problem
- P0102 Air flow sensor circuit low input
- P0103 Air flow sensor circuit high input
What does code P01B7 mean?
The alternative fuel rail temperature sensor 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 P01B7?
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, P01B7 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.
