Fiat 500 2015–2016 — technical service bulletin
Bulletin 21-038-15 REV. B · NHTSA communication 10217418 · issued Oct 17, 2015
Technical service bulletin
communication type
Electrical System
component
2015–2016
model years
2
vehicle entries
Official summary
Flash: Drivetrain Control Module (DTCM) C2020-01 ECU Internal Fault setting in the DTCM This bulletin involves reprogramming the Drivetrain Control Module (DTCM) with the latest available software. Some vehicles may experience the All Wheel Drive Light (AWD) illuminating due to DTC C2020-01 ECU Internal Fault setting erroneously in the DTCM.
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.