Code P157A Possible Causes
Faulty Reductant Control Module Relay 2
Reductant Control Module Relay 2 circuit poor electrical connection
Reductant Control Module Relay 2 harness is open or shorted
Code P157A Possible Causes
Faulty Reductant Control Module Relay 2
Reductant Control Module Relay 2 circuit poor electrical connection
Reductant Control Module Relay 2 harness is open or shorted