Hello, I recently purchased the vehicle listed above, the day after I brought it home the check engine light came on with p0051 and p0052. I identified the correct sensor upstream bank 2 and replaced the original with a Denso 234-9029 (like an idiot I did not test the old sensor first), to my surprise the codes returned after I cleared them. So I've been investigating further, the fuses are fine, I could not identify any frayed wires, but I did check the voltage in the harness which mates with my 02 sensor and for some reason it is only supplying 8 volts, which makes me think there is some issue in the wiring, I couldn't see any exposed wiring, and obviously would like to avoid unraveling the entire harness from the computer, has anybody encountered this problem before? Any tips would be greatly appreciated. Thanks!!
Jul 24, 2022 at 8:00 PM
