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

Reading and Clearing Diagnostic Trouble Codes

TROUBLE CODE ERASURE

Diagnostic Trouble Codes can be erased in two ways. The first is to erase the DTC with the DRBIII or scan tool. The second is if the DTC is no longer present, the DTC is reset by the TCM (after an ignition cycle), which will place the DTC in an intermittent status (Stored DTC).

When there are no diagnostic trouble codes stored in memory, the DRBIII will display (NO DTCs DETECTED)