Clearing Diagnostic Trouble Codes

Diagnostic Mode 04 - Erase DTC Memory

Diagnostic Mode 04 makes it possible to erase the DTC memory and to reset all emissions-related diagnostic data. In that way, all faults in the DTC memory in the ECM and TCM are erased. The adaptation values may also be reset.

Emissions-related diagnostic data includes (as applicable):

• -MIL Status

• -Number of DTCs

• -Readiness bits

• -Confirmed DTCs

• -Pending DTCs

• -DTC that belongs to freeze frame

• -Freeze frame data

• -Test results of specific diagnostic functions

• -Distance driven with "MIL ON"

• -Number of warm-up cycles after erasing the DTC memory

• -Distance driven after erasing the DTC memory

• -Misfire counter

• Depending on scan tool and protocol used, diagnostic mode 04 and the information provided may be referred to by a different name.

Procedure

- Connect the scan tool.

- Switch the ignition ON.

- Select Diagnostic Mode 03: Interrogating fault memory.

- Then select Mode 4: Reset/delete diagnostic data.

The scan tool will display: Diagnostic data are being erased.

- Switch the ignition OFF.