Conditions for Setting the DTC: P0053

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

The ECM detects that the HO2S 1 heater calculated resistance is not within an expected range at engine start-up for one second.

P0135

The HO2S heater current is less than 0.31 amps or more than 1.43 amps for at least 17 out of 20 samples. Five test samples during each trip with a 30 second delay between each test.
Each test duration is one second.