Just replace the O2 sensor?
March 5, 2014 11:01 AM Subscribe
Have an 05 Subaru Legacy. ~70k miles. The check engine light comes on reliably with wide open throttle (and considering I'm in Pittsburgh, the land of bridges and merge points...). The diagnostic code says low voltage on bank 1 sensor 1. Should I just swap the O2 sensor? I ask because I don't really understand why I'd only be getting the low voltage code with WOT.