P0141 or P0161
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the HO2S 2 heater current is greater than 2.875 amps, or less than 0.25 amps.
- The DTCs set within 120 s during the heater current test when the above condition is met.