the codes p420 and p0303 came up what do they mean
Wednesday, August 20th, 2008 AT 10:03 PM
1 Reply
BMRFIXIT
MECHANIC
19,053 POSTS
P0420 is catalytic converter efficiency low
since you have p0303 which is a misfire on cylinder # 3
I would say fix the misfire first
check it for tune up and check the coil
check for exhaust leak