Difference between revisions of "16804/P0420/001056"

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* Check Oxygen Sensor(s) Control
 
* Check Oxygen Sensor(s) Control
 
* Perform Oxygen Sensor(s) Aging Check
 
* Perform Oxygen Sensor(s) Aging Check
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 +
==== Special Notes ====
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* For 1.8T's experiencing this fault code, this thread may be useful: http://forums.vwvortex.com/zerothread?id=663057
  
 
[[Category:Fault Codes]]
 
[[Category:Fault Codes]]

Revision as of 10:21, 28 April 2006

16804/P0420/001056 - Catalyst System; Bank 1: Efficiency Below Threshold

Possible Causes

  • Oxygen Sensor(s) defective
  • Oxygen Sensor(s) Control defective

Possible Solutions

  • Check Oxygen Sensor(s)
  • Check Oxygen Sensor(s) Control
  • Perform Oxygen Sensor(s) Aging Check

Special Notes