Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Engine Off Timer



Description

This diagnostic is used as part of the EVAP detection system. The EVAP system diagnostic defaults to enabled if an engine off timer error is detected. The diagnostic consists of a rationality check of the engine off time against engine cool down. The diagnostic runs if the ECT at engine off minus the ECT at engine start is grater than or equal to 39.8 degree C.