Conditions For Setting DTC
WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
The DTC will set if either of the following conditions are present for a 100 second monitoring period:
- PCM has monitored fewer than 25 rich-to-lean switches.
- PCM has monitored fewer than 25 lean-to-rich switches.