Are you sure that is the correct code?2012 Passat TDI SEL throwing a check engine code P20B7. Anyone have any idea what is broken or how to fix this issue?
The faults would come and go. I finally got the car to the dealer B with the fault on. It seems that the adblu line which includes a heater element was not clipped properly to the line. It seems that it melted.I had CEL come on today with:
14418 - Output Stage for Reductant Heater
P20B7 00 [096] - Short to GND
Intermittent - Not Confirmed - Tested Since Memory Clear
14419 - Output Stage for Reductant Heater
P20B8 00 [096] - Short to Plus
Intermittent - Not Confirmed - Tested Since Memory Clear
9625 - Feedback from Reductant Tank Heater 2
P146F 00 [172] - Short to Plus
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
The CEL then came off within 100KM. Still waiting on fix since this is a 6M