Code Enable Criteria

WARNING: This page is about a different car, the 2001 GMC Sonoma and 2001 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Conditions for running DTC:

DTCs P0105, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0169, P0171, P0172, P0178, P0179, P0201-P0204, P0300, P0301-P0304, P0336, P0440, P0446, P0452, P0453, P0506, P0507, P0601, P0602 or P1441 are not set.
Airflow is more than 3 grams per second.
ECT is greater than 158°F (70°C).
Above conditions are met for 10 seconds.
TP angle is 8-56 percent.
MAP is greater than 25 kPa.
Engine run time is more than 30 seconds.

Conditions for setting DTC; O2S 1 voltage is 399-499 millivolts for 125 seconds.