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P20EE SCR Cat Efficiency
I am battling a P20EE NOx Catatlyst efficiency code on this TDI. I have been watching the parts per million NOX pids before and after the SCR catalyst but I am unsure of what I should be seeing. What I do see is sometimes the first NOx sensor is reading less N... Login to read more. 
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| Engine | 3.0 L |
| Trans | 6-speed Automatic (Electronic) |
Vehicle Data
2010 Volkswagen Touareg TDI 3.0L
| Engine | 3.0 L |
| Trans | 6-speed Automatic (Electronic) |
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