16804/P0420/001056: Difference between revisions
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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 | ||
==== Special Notes ==== | |||
* 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 15:21, 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
- For 1.8T's experiencing this fault code, this thread may be useful: http://forums.vwvortex.com/zerothread?id=663057