BMW 320I 2012–2014 — technical service bulletin
Bulletin 120414 · NHTSA communication 10148306 · issued May 1, 2014
Technical service bulletin
communication type
Electrical System
component
2012–2014
model years
8
vehicle entries
Official summary
MTurbocharger Coolant Pump: Fault Code 20A503. "Drive Faulty" message is displayed in the Check Control. Fault code 20A503 "Turbocharger coolant pump, self diagnosis: Signal implausible" is stored in the DME. Unfavorable DME software application
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.