Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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These codes are pointing to the rear oxygen sensors. Specifically, with the internal heaters for the sensors. It's very uncommon for both sensors to fail at the same time. Very likely, there was damage done to the sensor's wire harnesses during the accident. First, check the fuse #41 in the under-hood fuse block. Should be labeled as "O2 SNSR POST". If the fuse is good, then the wiring harness should be carefully inspected for any damaged, pinched or broken wires. If you are absolutely sure the wiring has no issues, then the problem may very well lie in the ECM (on-board computer). Please remember to leave a rating using the 'stars' or click 'Accept'. A 5-star rating is much appreciated! Rating or accepting my answer does not cost you extra.
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