Fuel Cap Sensor/Switch Stuck
The fuel cap status switch is stuck in one position — the ECU never sees the expected transition between open and closed.
Affected components
- Fuel cap sensor
Common causes
- High likelihood: Cap switch stuck mechanically
- Medium likelihood: Connector corroded
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.