P2066: The fuel level sensor B gives readings outside the normal range
The fuel level sensor B gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P2066 |
|---|---|
| System | Engine and transmission |
| Group | P20xx, Emissions: catalysts and AdBlue |
| Type | Generic: it means the same on every make |
How to read and clear P2066 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 P2066 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
- P2062 The AdBlue supply control circuit is open
- P2063 The reductant supply control circuit signal is low
- P2064 The reductant supply control circuit signal is high
- P2065 The fuel level sensor B has an electrical fault
- P2067 The fuel level sensor B gives a lower signal than normal
- P2068 The fuel level sensor B gives a higher signal than normal
- P2069 The fuel level sensor B fails now and then
- P206A The AdBlue quality sensor has an electrical fault
- P2002 Diesel particulate filter efficiency below threshold (bank 1)
- P2003 Diesel particulate filter efficiency below threshold (bank 2)
- P2004 Intake manifold runner control stuck open (bank 1)
- P2005 Intake manifold runner control stuck open (bank 2)
What does code P2066 mean?
The fuel level sensor B gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P2066?
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, P2066 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.
