P04BB
Fuel Fill Door Lock Control Circuit Open
Fuel Fill Door Lock Control Circuit Open: the control circuit is open. Likely a broken wire, disconnected connector, or failed actuator.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Open in harness or actuator windingCommon
- Pin pushed back out of connector bodyLess likely
- Cracked solder joint inside the module or sensorLess likely
Parts involved
- Fuel Fill Door Lock Actuator
P04BB is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.