P25A4: The fuel selector switch (petrol or gas) has an electrical fault
The fuel selector switch (petrol or gas) has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P25A4 |
|---|---|
| System | Engine and transmission |
| Group | P25xx, Auxiliary inputs and electrical system |
| Type | Generic: it means the same on every make |
How to read and clear P25A4 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 P25A4 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
- P259F There is a fault in the turbocharger A boost control position in the high limit
- P25A0 There is a fault in the turbocharger B boost control position in the low limit
- P25A1 There is a fault in the turbocharger B boost control position in the high limit
- P25A3 The engine bonnet has a broken or disconnected wire
- P25A5 The fuel selector switch (petrol or gas) gives readings outside the normal range
- P25A6 The fuel selector switch (petrol or gas) gives a lower signal than normal
- P25A7 The fuel selector switch (petrol or gas) gives a higher signal than normal
- P25A8 The fuel selector switch (petrol or gas) fails now and then
- P2563 Turbocharger boost control position sensor A range/performance
What does code P25A4 mean?
The fuel selector switch (petrol or gas) has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P25A4?
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, P25A4 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.
