CEL with P0420 code
#1
CEL with P0420 code
What's the most likely part to replace with the P0420 code from the check engine light? Is it the pre-cat ($200 eBay) or the back cat ($200+ eBay) or the O2 sensors? My CEL has now been on for over a week and January 2010 the car is due for inspection. North Carolina inspections are a little easier on smog then CA.
#3
Well this is a little odd. I changed the spark plugs this weekend and the light went off. Two of the plugs had worn down the metal tip that pokes out of the insulator almost all the way down to the insulator while the other two still had a sharp point sticking out of the insulator. The car had Volvo plugs in it and I replaced them with Bosch.
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