BenzWorld Junior Member
Date registered: Nov 2008
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Reprogramming the E320 computer for check engine light illuminating
My 2002 E320 Station Wagon has illuminated check engine light.
I changed all 4 Oxygen Sensors, two Catalytic Converters, and then reset the check engine light with diagnostic tool. But , the check engine light gets illuminated just after 25 miles of driving. I was the codes of 403 and 402 which says the Catalytic Converters below threshold.
I was reading that before and I still read that after installing to new Cats.
What seems to be the problem I can not figure it out. And it is not the Gas Cap either.
Do I need to reprogram the engine computer to fix this problem? Please help
Last edited by ziggie; 01-14-2010 at 04:32 PM.