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  1. General Maintenance, Troubleshooting & Accidents.
    Hi all. I have a 2017 WRX that is currently running a stage 2 Cobb OTS tune with a Cobb catted J-Pipe and stock catback. I've been on this setup for a bit over two years now with no issues. Recently I got a check engine light, and my Cobb Accessport shows the P0137 engine code. This is the low...
  2. General Maintenance, Troubleshooting & Accidents.
    P1139 Front oxygen (A/F) sensor #1 heater circuit performance/range problem.. Ive gotten this code 3 or 4 times in the last 2 months maybe and I have absolutely no Idea where to start?? What does this even mean?? Thank You guys in advance :)
  3. International Forum
    Hi Guys, I know there are a ton of posts about oxygen sensors, but i havent been able to find what I need. I have a 99 WRX JDM version and it is really hard to find the right o2 sensor here in aus. I have managed to find the right part number etc by calling the dealership in New Zealand. I...
1-3 of 3 Results