2002 Mercedes Benz 320e Enegin Light comes on

2002 MERCEDES BENZ E320

96,000 MILES • 6 CYL • 4WD • AUTOMATIC

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hey sir, How would I fix Codes po432 and p0422 they both telling me that main catalyst blow threshold and banks 1 &2. I hopw that doesn't mean that I have to replace the catalatice convertrs. Please help thanks

Feb 4, 2009 at 5:52 PM

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Unfortunately this does point to failed catalytic converters. Another way to check them is by hitting them with a rubber mallet. If you here ratteling in tha Converter then they bad. However even if they don't rattle with these codes you are more than likely looking at cats anyways.

Mar 31, 2009 at 11:49 PM