The control module detected improper operation of the Fuel Fill Door Position Sensor/Switch circuit.
TuningBot DTC Database · v4.37.15
P04B8 Fuel Fill Door Position Sensor/Switch Circuit
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P04B8 means
Related and nearby codes
How to read P04B8
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P04B8
What does P04B8 mean?
Fuel Fill Door Position Sensor/Switch Circuit. The control module detected improper operation of the Fuel Fill Door Position Sensor/Switch circuit.
Is P04B8 generic or manufacturer-specific?
P04B8 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P04B8 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
