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

Diagnostic Mode 4: Reset/Erase Diagnostic Data



Diagnostic mode 4: Reset/erase diagnostic data

Function

This diagnostic mode performs the following functions:
- All emission relevant malfunctions in DTC memory will be erased,
- The operating conditions at which a malfunction was stored will be reset,
- All adaptation values are being reset,
- All test results of the diagnostic functions are being reset.

Requirement
- DTC memory was erased.

Procedure
- Connect diagnostic tester.
- Start engine and let run at idle.
- Under address word 33, select "Diagnostic mode 4: Reset/erase diagnostic data.
Erased or reset:
- Number and content of the DTC memories,
- Operating conditions,
- Adaptation values,
- Test results.

- End diagnosis and switch ignition off.
- Generate readiness code