Conditions For Running DTC

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0122, P0123, P0131, P0132, P0133, or P0134 not set.
Engine Coolant Temperature (ECT) is more than 70°F (20°C).
Engine has been running for longer than 20 seconds.
Engine is operating in a Closed Loop operation.
Power enrichment parameter is Active.