What does code P240D mean?

Q: What does code P240D mean?

Alternative Fuel Low Pressure System Leak. P240D indicates that the powertrain control module has detected a leak in the low-pressure side of an alternative fuel system, such as compressed natural gas or liquefied petroleum gas. The computer typically uses a pressure decay test or a dedicated leak detection pump to monitor the low-pressure circuit and sets this code when pressure drops faster than expected.

DTC codes / P24xx · Auxiliary emission controls / P240D

P240DAlternative Fuel Low Pressure System Leak

P240D indicates that the powertrain control module has detected a leak in the low-pressure side of an alternative fuel system, such as compressed natural gas or liquefied petroleum gas. The computer typically uses a pressure decay test or a dedicated leak detection pump to monitor the low-pressure circuit and sets this code when pressure drops faster than expected.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

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.