check engine light was on. ran fine. codes pointed to bank one

Asked by Feb 05, 2017 at 02:43 PM about the 2006 Hummer H3 4dr SUV 4WD

Question type: Maintenance & Repair

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

1 Answer

79,945

Do you have an exhaust system leak?

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