2003 A6 MIL light trouble
#1
2003 A6 MIL light trouble
A few days ago, the check engine light came on while I was on the highway. I scanned it and it gave me a P0421 code, which I understand is related to the cat.
The car seems to drive fine, but I'm uneasy to be driving with the light on.
OBD-codes.com says that
* The catalytic converter is no longer functioning properly
* An oxygen sensor is not reading (functioning) properly
* A sparkplug is fouled up
What can I do to narrow the problem down?
The car seems to drive fine, but I'm uneasy to be driving with the light on.
OBD-codes.com says that
* The catalytic converter is no longer functioning properly
* An oxygen sensor is not reading (functioning) properly
* A sparkplug is fouled up
What can I do to narrow the problem down?
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Vezon
B6 Models
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02-26-2011 09:46 AM