Subaru WRX Forum banner
o2 sensor
1-2 of 2 Results
  1. Newbie Forum
    So I just bought a used wrx a day ago and was putting gas but didn't know what gas was already in the tank, I asked the salesman and he just said premium and didn't really understand me so I put 93 octane, after I did I had got a check engine light, the car came with a Cobb access port and I...
  2. Problem Diagnosis
    I have a 2020 STI I bought in West Virginia driving back to Nashville. Refueled in Lexington then 12 miles down the road the CEL came on steady and the cruise light flashing along with the SI light flashing. The code came back upstream O2 error too rich. Has anyone had this issue tried the fuel...
1-2 of 2 Results
Top