I am having a trouble code of P0420 on my 2000 Dodge Grand Caravan. The O2 has been replaced so with the EGR valve and cat converter. But the cat converter was just a after market. What must be the problem why the check engine light is coming on even the code has been erased? Thank you very much.
have the same problem?
Tuesday, November 22nd, 2011 AT 5:46 PM