Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

1. 2
   
   This step isolates the condition. If all DTCs are set, this indicates that one of the heater low circuits are grounded. An internal HO2S condition can also cause all DTCs to set.
2. 3
   
   This step isolates the condition. If DTC P0036 is set without the other control circuit faults, the condition is present only in the HO2S bank 1 sensor 2 heater low control circuit.