P1133 SUBARU Possible Causes
What does it mean?
- Faulty front oxygen sensor
- Front oxygen sensor harness is open or shorted
- Poor electrical connection in the front oxygen sensor circuit
How to fix P1133 SUBARU code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check engine light on (or service engine soon warning light)
P1133 SUBARU Meaning
The front oxygen sensor heater circuit high input is the generic description for Subaru code P1133, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Subaru P1133 OBDII code.