I had a garge check the codes when the check.

Tiny
ANONYMOUS
  • 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?

Monday, November 12th, 2012 AT 11:29 PM

3 Replies

Tiny
WRENCHTECH
  • EXPERT
  • 20,813 POSTS

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

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Monday, November 12th, 2012 AT 11:38 PM
Tiny
CARADIODOC
  • EXPERT
  • 28,401 POSTS

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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Monday, November 12th, 2012 AT 11:39 PM
Tiny
EXOVCDS
  • MEMBER

2.0L engine? Burning oil? City driven only?

Thomas

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Tuesday, November 13th, 2012 AT 12:09 AM

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