P0440

Detecting Condition and Trouble Area





Wiring Diagram






































Inspection Procedure
- If DTC P0441 , P0446 or P0450 is output after DTC P0440, first troubleshoot DTC P0441 , P0446 or P0450. If no malfunction is detected, troubleshoot DTC P0440 next.
- Ask customer whether, after MIL came on, customer found fuel tank cap loose and tightened it. Also ask customer whether fuel tank cap was loose when refueling.

If fuel tank cap was loose, it was cause of DTC. If fuel tank cap was not loose or if customer was not sure if it was loose, troubleshoot according to inspection procedure.