Conditions For Setting DTC
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
P0135 or P0155
- The HO2S voltage remains within 150 mV of the start-up voltage for a predetermined amount of time, based on ECT and airflow.
P0141 or P0161
- The HO2S voltage remains within 75 mV of the start-up voltage for a predetermined amount of time, based on ECT and air flow.