aly
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P0420 + P0420P Fault Codes Catalyst Efficiency Below Threshhold (Bank
aly replied to aly's topic in Engine & Transmission
Thanks alot, i'll have a good look for any blows. -
my is 200 1999 is showing these two fault codes, (fink they both refer to the same thing) p0420 and p0420p not sure what the p stands for at the end of the 2nd code. anyone have any ideas? anyone know the most common reason for this? i know its refering to the cat but there is also a pre cat so im unsure which has the problem. :tsktsk: