Alfa Romeo 4C Spider 2014–2020 — technical service bulletin
Bulletin S2108000027 · NHTSA communication 10187086 · issued Jan 29, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2020
model years
18
vehicle entries
Official summary
CEL, Check Engine Lamp On, DTC P0339 Crankshaft Position Sensor Intermittent
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.