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P25D9: The fuel level sensor C gives a lower signal than normal

The fuel level sensor C gives a lower signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.

Code P25D9 at a glance
CodeP25D9
SystemEngine and transmission
GroupP25xx, Auxiliary inputs and electrical system
TypeGeneric: it means the same on every make

How to read and clear P25D9 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 P25D9 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.

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What does code P25D9 mean?

The fuel level sensor C 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 P25D9?

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, P25D9 comes back.