check engine light was on. ran fine. codes pointed to bank one
I replaced the O2 sensor. The light went off for a couple days and came back
on with the same code. I replaced the other O2 sensor. Light stayed off for
two days and is back on. Code is bank 1 issue still. What else can I check
Do you have an exhaust system leak?
What is the problem when piston 4 for engine humer h3 year 2006 turn on
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