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

Clearing Diagnostic Trouble Codes

Clearing diagnostic trouble codes is accomplished by choosing the "Clearing Trouble Codes" option in the Scan tool DTC menu. Disconnecting the battery for 60 seconds (may be longer in some cases) will clear DTCs from the ECM's memory. Failure records will also be cleared.