Fuel Cap Sensor/Switch Circuit Range/Performance
On vehicles with a sensed fuel cap, the cap-status signal is electrically valid but does not change as expected when the cap is opened or closed.
Affected components
- Fuel cap sensor
- Sensor wiring
Common causes
- High likelihood: Cap switch worn
- Medium likelihood: Cap seal aged, switch never seats
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.