code p0420 2005 Tl :<
#1
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code p0420 2005 Tl :<
I got the code p0420, before i go to the dealer and spend $$$$$$$$$ is it covered under warranty ? my car is a 2005 Acura tl with 98,xxx KM on it
#4
That fault is caused when the ECM doesn't see enough change between the front and rear O2 sensors. You could have a bad/slow front or rear O2 sensor or a bad catalytic converter.
#6
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