Q: Check engine light is on. 04 Pathfinder. Quick check at Autozone and clerk said possible vacuum leak, o2 sensor, or catalytic conv

asked by on March 26, 2017

The check engine light is on. Car runs very well but gets poor mileage. Autozone put a code check on it and said it was either a vacuum leak, an o2 sensor, or a catalytic conv. Your opinion?

My car has 11640 miles.
My car has an automatic transmission.

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