I just purchased a 2002 E320 MBZ. The engine light cammeon onday 3. Codes read and they are PO432 &Po422> What can I do to resolve this?
First you have to found out what the codes mean and most parts stores like auto zone and other will diagnosis and tell you what the codes mean for free.
Those are catalytic converter codes. Basically, you need new catalyitc converter.
catalytic converter, wiring, ho2s2. thats the causes.
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