Adblue / Reductant Heater problems

bobestes

New member
Joined
Nov 26, 2021
Location
Little Rock, Arkansas
TDI
2015 Sportwagen
2015 TDI Adblue / Reductant Heater problems
I got these CEL codes:
P20B9 Reductant Heater A Control Circuit/Open - OBD-Codes ...
P148B Adblue heater fault
I assume this fix would be covered but my Diesel Gate Warranty.

My battery also drained. I tested the #1 fuse “Reductant Heater Control Module” and it was pulling 6 or 7 amps with the ignition off.
I pulled the fuse above to stop the battery drain, which I assume disables the Adblue / Reductant Heater.

Will pulling this fuse cause a problem if it is not freezing outside? I do intend to take it to the dealer to fix, but not today.
 

pedroYUL

Veteran Member
Joined
Sep 8, 2011
Location
MI, USA
TDI
2015 Passat CVCA; 2015 GSW CRUA; 2012 wagon CJAA; 2004 wagon BEW
Should be dieselgate covered...all of it
 
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