Mechanics

VOLKSWAGEN JETTA CATALYTIC CONVERTER PROBLEM

2003 Volkswagen Jetta • 60,000 miles

I had a garge check the codes when the check engine light came on and they found P0420, catylst efficiency low, bank 1. What does this mean?
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Guest
November 12, 2012.



99% of the time it means you need a new Catalytic Converter on Bank 1 which may be the only one.

Wrenchtech
Nov 12, 2012.
There's no change in the composition of the exhaust gases taking place in the catalytic converter. Time for a new one.
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Caradiodoc
Nov 12, 2012.
2.0L engine? Burning oil? City driven only?

Thomas

Tiny
Exovcds
Nov 13, 2012.

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