2002 Mercedes Benz 320e Enegin Light comes on

FMONTE

MEMBER
2002 MERCEDES BENZ E320
6 CYL
4WD
AUTOMATIC
96,000 MILES

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

Wednesday, February 4th, 2009 AT 5:52 PM

1 Reply

GFIMOTORCARS

MECHANIC
673 POSTS

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.