Reading and Clearing Diagnostic Trouble Codes

Clear DTC

Note: If you clear the DTC (Diagnostic Trouble Codes) you will not be able to read any codes recorded during the last occurrence.

Note: To use the DTC again to identify a problem, you will need to reproduce the fault or the problem. This may require a new test drive or just turning the ignition on (this depends on the nature of the fault).

1. If you have a Tech 2:
1. Connect the Tech 2 if it is still not connected GO THROUGH Tech 2 OBD II CONNECTION.
2. Push "F1: Clear DTC Information" in the Application Menu and answer "Yes" to the question "Do you want to clear DTC's?"
a. When a malfunction still exists and the Tech 2 displays "4L30E CODES NOT CLEARED". This means that the problem is still there or that the recovery was not done. Please GO TO DTC CHECK.
b. When a malfunction has been repaired and the recovery is done. The Tech 2 displays "4L30E CODES CLEARED".
2. If you have no Tech 2:
Disconnect the PCM battery feed as necessary.