Oxygen Sensors issue

Av4nt

Registered User
Hi,

Typically on the way to ADI, Engine light came on so I thought better just get AA out to come and do a code read.

Came up with 02 sensor bank 1 Rich, and 02 Sensor Bank 2 Lean.
He wasnt overly worried so I still travelled there and back, just the MPG took a little hit, not that it is awesome anyway lol.

Are they much issue to have changed or expensive? or is that a CAT issue?
 
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