Code Enable Criteria
WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Following criteria must be met to enable DTC:
- Voltage supplied to module is in normal operating voltage range of 9 to 16 volts.
- Vehicle power mode, ignition switch position, requires serial data communication to occur.