P0420 Question
#1
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Ok, I've searched and can't really find anything...so here's the question:
I've got the P0420 code with no other codes. IF it is a faulty O2 sensor, which one do you think it would be and why?
I've got a 2015 XFRS, and Jag put in 3 sensors on each side. P0420 is bank 1, so that's the right side, but which sensor? Pre cat, in cat (WHY is that a thing?) or post cat?
Cheers!
I've got the P0420 code with no other codes. IF it is a faulty O2 sensor, which one do you think it would be and why?
I've got a 2015 XFRS, and Jag put in 3 sensors on each side. P0420 is bank 1, so that's the right side, but which sensor? Pre cat, in cat (WHY is that a thing?) or post cat?
Cheers!
#2
#3
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got the same thing about 4 yrs ago.. replaced the cat on my driver's side... got the same code about 4 yrs later..I didn't think it can be the cat always thought it was the 02 sensors.. dealership says it's the cat not the sensors.. dunno what to think since that factory replacement cat is only 5 yrs old .mit can't possibly be bad can it ??
and if it is what if I keep driving with that check engine light on?
and if it is what if I keep driving with that check engine light on?
#4
#5
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I mean heck I'll drive it a few more months this way and just trade it in when my extended warranty is done
#6
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stevep10
S-Type / S type R Supercharged V8 ( X200 )
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12-31-2020 12:06 PM
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