The control module determined that the Fuel Fill Door Open Request Sensor/Switch Performance/ did not change state as commanded and appears stuck.
TuningBot DTC Database · v4.37.14
P04C9 Fuel Fill Door Open Request Sensor/Switch Performance/Stuck Off
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P04C9 means
Related and nearby codes
How to read P04C9
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 P04C9
What does P04C9 mean?
Fuel Fill Door Open Request Sensor/Switch Performance/Stuck Off. The control module determined that the Fuel Fill Door Open Request Sensor/Switch Performance/ did not change state as commanded and appears stuck.
Is P04C9 generic or manufacturer-specific?
P04C9 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P04C9 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. 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
