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Bank 2 running too lean: p0174. Only mod is catback exhaust
A catback wouldn't effect this, would it? Figured since sensor is upstream it wouldn't matter.
Anything I can do to troubleshoot this before replacing the sensor? If I install the Procede on the shelf would it be ok? I know it gets rid of lean o2 sensor errors, but isn't this something I should fix first instead of just covering up?
All help appreciated!
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