Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.

P0030, P0036, P0050 or P0056

The engine control module detects an open circuit in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s.

P0031, P0037, P0051 or P0057

The engine control module detects a short to ground in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded OFF for greater than 5 s.

P0032, P0038, P0052 or P0058

The engine control module detects a short to voltage in the heater output low side driver circuit of the heated oxygen sensor when the heater is commanded ON for greater than 5 s.

P0053, P0054, P0059 or P0060

The engine control module detects the HO2S heater is not within a specified resistance range at engine start-up.

P0135 or P0155

The engine control module detects that the HO2S 1 heater current is greater than 3.1 amps or less than 0.3 amps for greater than 8 s.

P0141 or P0161

The engine control module detects that the HO2S 2 heater current is greater than 2.9 amps or less than 0.3 amps for greater than 8 s.