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Audi A4 3.0 has a rougt idle VAG com only reads (Air Quality Sensor (G238) would this cause the stum

I have a 2002 Audi a4 the timing belt water pump, plugs, etc.. were just done. When you turn the car on it fires right up but when it idles it stumbles a bit. I ran VAG-Com and it came up with Air Quality Sensor (G238). Would this cause the poor idle? If so where is this located?

—submitted by mikekirchner on February 5th 2009 at 11:32pm.

  • DannytheMechanic
  • Posts: 181
  • Feb 06 2009 9:06am

This post contains the solution to the original quesiton, 'Audi A4 3.0 has a rougt idle VAG com only reads (Air Quality Sensor (G238) would this cause the stum'

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