Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0050, P0056, P0059, or P0060
- The control module detects that the affected HO2S heater low control circuit is not within a specified range at engine start-up.
- DTCs P0053, P0054, P0059, and P0060 set within one second when the above condition is met.
DTC P0155
- The control module detects that the HO2S 1 heater current parameter is more than 3.125 amps or less than 0.25 amp.
- DTC P0155 sets within 30 seconds during the heater current test when the above condition is met.
DTC P0161
- The control module detects that the HO2S 2 heater current parameter is more than 1.625 amps or less than 0.25 amp.
- DTC P0161 sets within 30 seconds during the heater current test when the above condition is met.