What does code P240E mean?

Q: What does code P240E mean?

Alternative Fuel High Pressure System Leak. P240E indicates that the powertrain control module has detected a leak in the high-pressure section of an alternative fuel system, such as compressed natural gas or hydrogen. The computer typically monitors pressure decay rates or fuel tank isolation valve performance and sets this code when the pressure drops faster than expected during a key-off leak test.

DTC codes / P24xx · Auxiliary emission controls / P240E

P240EAlternative Fuel High Pressure System Leak

P240E indicates that the powertrain control module has detected a leak in the high-pressure section of an alternative fuel system, such as compressed natural gas or hydrogen. The computer typically monitors pressure decay rates or fuel tank isolation valve performance and sets this code when the pressure drops faster than expected during a key-off leak test.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

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.