Reading and Erasing Diagnostic Trouble Codes (DTCs)

This function allows one to read and erase stored diagnostic trouble codes (DTCs), counters and frozen values. The on-board diagnostic (OBD) system can identify 33 different faults in the form of diagnostic trouble codes.

A diagnostic trouble code cannot be erased until it has been read at least once.

When the transmission control module (TCM) detects a fault, the values of certain parameters are frozen and these can be read together with the diagnostic trouble code.

The following frozen values van be read:

- Oil temperature
- Vehicle speed
- Engine speed RPM