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Discussion Starter #1
Touareg first threw a code of P20EE, then couple days later P20E9, I have reset the codes and after a couple of days(usually) P20E9 will come back.
This is a new car to me and after two months the CEL is on :confused:
I'm trying to get through emissions.
Thanks

2010 V6 TDI, Air, Tech, Hitch
 

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P20EE - SCR NOx Catalyst Efficiency Below Threshold Bank 1

P20E9 - Reductant Pressure Too High


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Possible components:

Defective NOx sensor

Reducing agent metering system pressure sensor

Faulty ECM

Defective nozzle

Wiring bad



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