Conditions for Setting the DTC: P0135
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the HO2S 1 heater current parameter is more than 3.125 amps or less than 0.25 amp.
- DTC P0135 sets within 120 seconds during the heater current test when the above condition is met.