Unplugged Oxygen sensor
Thread Starter
Teching In
Joined: Jan 2018
Posts: 1
Likes: 0
Unplugged Oxygen sensor I recently bought a 2006 Hummer H2 SUT.
The check engine light was showing oxygen sensor 2/ bank 2. I took it to my mechanic and he said it was unplugged. He fixed it and the light went off. 1 hour after driving it from the mechanic's the light came back on and was diagnosed as a random misfire. Could unplugging an Oxygen sensor bypass any other codes on the vehicle?
The check engine light was showing oxygen sensor 2/ bank 2. I took it to my mechanic and he said it was unplugged. He fixed it and the light went off. 1 hour after driving it from the mechanic's the light came back on and was diagnosed as a random misfire. Could unplugging an Oxygen sensor bypass any other codes on the vehicle?
^ Yes, it would.
So, the persons who unplugged the O2 sensor previously likely did that on purpose either to:
- Hide an emissions problem causing the misfire
- Address some sort of bad tune
So, the persons who unplugged the O2 sensor previously likely did that on purpose either to:
- Hide an emissions problem causing the misfire
- Address some sort of bad tune
