G30 B57 AdBlue issues - how to fix?

G30 B57 AdBlue issues - how to fix?

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turbo4ever

Original Poster:

32 posts

129 months

Sunday 1st October 2023
quotequote all
Mileage: 180K

Error codes (BMW ISTA): 2C3000, 805278, 80527A, 8052A6, ~A7, ~A8 and ~DF. Check engine light is on. No AdBlue is consumed. Car works.

Occured while driving in hot climate. Went away and then came back (permanently). Error codes indicate initiation failure, communication failure, fuel (!) level failure, temperature (out of range), AdBlue system defect.

Will replacing the pump (including sensors) in the AdBlue-reservoir be sufficient or are cables more likely to be the issue?