Response Test Enable

WARNING: This page is about a different car, the 1997 GMC Pickup and 1997 Chevrolet Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Closed-loop low MAP not active.
Closed-loop Mode 0 not active.
DTCs P0151, P0152, P0154 and P0155 not active.
Vehicle is in "closed-loop" operation.
ECT is greater than 135°F (57°C).
Engine run time greater than 75 seconds.
MAF is greater than 15 gm/s with engine at less than 3000 RPM.
Canister purge duty cycle is greater than zero percent.
Conditions are present for greater than 2 seconds.