What does code P2408 mean?

Q: What does code P2408 mean?

Fuel Cap Sensor/Switch Circuit. P2408 indicates that the powertrain control module has detected a fault in the fuel cap sensor or switch circuit, which is part of the evaporative emissions control system. The computer monitors this circuit to verify that the fuel cap is properly sealed and that the sensor is reporting correctly, and it sets the code when the signal voltage or resistance falls outside the expected range.

DTC codes / P24xx · Auxiliary emission controls / P2408

P2408Fuel Cap Sensor/Switch Circuit

P2408 indicates that the powertrain control module has detected a fault in the fuel cap sensor or switch circuit, which is part of the evaporative emissions control system. The computer monitors this circuit to verify that the fuel cap is properly sealed and that the sensor is reporting correctly, and it sets the code when the signal voltage or resistance falls outside the expected range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.