oxygen sensor problem
#1
oxygen sensor problem
ok, i have a 2001 monte carlo ls. my engine light keeps comin on and when i read it with the obd2 reader it gives me a code of 0420. which is something to do with my catalytic converters or my oxygen sensors. i had it checked out before and was told that it was the aftermarket catalytic converter placed on the car a little back and it would always mess with the oxygen readings on the O2 sensors. i don't know if this is true or not, but it's costing me in gas and i need to find a cheap fix for this... any ideas?
Thread
Thread Starter
Forum
Replies
Last Post