Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Before the ECM can report DTC P0053 failed, DTCs P0030, P0031, P0032, P0101, P0121, P0122, P0123, P0130, P0131, P0132, P0133, P0221, P0222, P0223, P0335, P0336, P0338, P167A, P2243, and P2251 must run and pass.
DTCs P2237 and P2626 are not set.
The calculated exhaust temperature is less than 400° C (752° F).
The engine is not misfiring.
The engine speed is more than 25 RPM.
The ignition 1 voltage is between 10.5-18 volts.
The HO2S heater is commanded ON.
DTC P0053 runs continuously once the above conditions are met for 60 seconds.