P0139 on Ford vehicles

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 Ford filed with NHTSA whose summary names P0139. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• TSB 24-2036 Service bulletin
  2024-02-06 · Back Over Prevention — Software
• Some 2023-2024 F-Super Duty chassis cab vehicles built on or before 02-Jan-2024 equipped with a 6.7L engine may exhibit an illuminated MIL with diagnostic trouble codes (DTC) P0133, P0139, and/or P0145 stored in the powertrain control module (PCM). This may be due to the software in the PCM and does not affect vehicle operation. To correct the condition, reprogram the PCM and transmission control
• TSB 24-2066 Service bulletin
  2024-03-12 · Electrical System — Software
• This TSB supersedes article 24-2036 to update the vehicles affected. Some 2023-2024 F-Super Duty pickup vehicles built on or before 02-Jan-2024 equipped with a 6.7L engine may exhibit an illuminated MIL with diagnostic trouble codes (DTC) P0133, P0139, and/or P0145 stored in the powertrain control module (PCM). This may be due to the software in the PCM and does not affect vehicle operation.

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