P0301 on Alfa Romeo vehicles Cylinder 1 is misfiring

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Alfa Romeo filed with NHTSA whose summary names P0301. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• S2018000011 Service bulletin
  2020-10-27 · Electrical System
• Issue includes a fault code(s) set in the Powertrain Control Module (PCM) for P0299, P0300, P0301, P0302, P0303, and/or P0304 after performing the PCM software update process for Customer Satisfaction Notification (CSN) W05.
• S2018000011 Service bulletin
  2020-10-27 · Electrical System
• Issue includes a fault code(s) set in the Powertrain Control Module (PCM) for P0299, P0300, P0301, P0302, P0303, and/or P0304 after performing the PCM software update process for Customer Satisfaction Notification (CSN) W05.
• 0900222 Service bulletin
  2022-01-25 · Electrical System
• Ignition Coil Double Wire Causing Misfire This bulletin involves replacing all four ignition coils. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): P0301 - Cylinder 1 Misfire Detected. P0302 - Cylinder 2 Misfire Detected. P0303 - Cylinder 3 Misfire Detected.

A stored code names the test that failed, never the part that caused it. The record above is what Alfa Romeo and its owners have filed about it; the code’s page across every make has the whole file.