2018 ARMADA; MIL ON WITH DTC P0138 AND/OR P0158
IF YOU CONFIRM
The MIL is ON with one or both of the following DTCs:
- P0138 (Heated oxygen sensor heater 2 [bank 1] circuit high voltage)
- P0158 (Heated oxygen sensor heater 2 [bank 2] circuit high voltage)
And
There are no drivability issues.
ACTION
1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on.
2. If this bulletin applies, reprogram the ECM.
