P1151 SUBARU Possible Causes
- Faulty rear oxygen sensor
- Rear oxygen sensor wiring harness open or shorted
- Poor electrical connection in rear oxygen sensor circuit
How to Fix Error Code P1151 SUBARU?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check connector pins for breakage, bending, push-out, or corrosion.
Possible Symptoms
- Check Engine Light illuminated (or Service Engine Soon warning light)
P1151 SUBARU Meaning
The high input of the rear oxygen sensor heater circuit is the general description of Subaru code P1151, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the OBDII code P1151 from Subaru.