2002 Audi A6 P0421 and P0352 Fault Codes: Engine Shaking Until Oil Temperature Stabilizes

Model: 2002 Audi A6 Fault Code: P0352 Posted: 2016-03-05 10:18

My 2002 Audi A6 is experiencing noticeable shaking or vibration when under load, which only stops once the engine oil temperature reaches its operating range. The vehicle has triggered two diagnostic trouble codes: P0421 and P0352. I'm seeking reliable explanations and solutions for these issues. Specifically, P0421 indicates a malfunction in the catalytic converter efficiency, while P0352 points to a misfire in cylinder 5. Any insights or repair recommendations for this combination of codes on a 2002 Audi A6 would be greatly appreciated.