OBD-II code · Powertrain (generic, extended)
P2408 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.
Is it safe to drive with P2408?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyCap switch worn
- PossibleCap seal aged, switch never seats
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.2–0.8 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Cap Sensor, Sensor Wiring
Related codes
- P2405EVAP System Leak Detection Pump Sense Circuit Low
- P2406EVAP System Leak Detection Pump Sense Circuit High
- P2407EVAP Leak Detection Pump Sense Circuit Range/Performance
- P2409Fuel Cap Sensor or Switch Circuit Range or Performance
- P240AEVAP System Leak Detection Pump Heater Control Circuit Open
- P240BEVAP System Leak Detection Pump Heater Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.