P1B14 on Ram 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 Ram filed with NHTSA whose summary names P1B14. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• 21-015-25 REV. A Service bulletin
  2025-07-19 · Power Train
• Flash: Transmission Control Module (TCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1B14 - Park By Wire Unintended Park Position. ● P1DF3 - ECU Not Initialized.** The customer must describe one or more of the following: ● **Secure Idle feature not working with
• S2621000003 Service bulletin
  2026-02-25 · Power Train
• Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
• S2621000003 REV. A Service bulletin
  2026-03-09 · Power Train
• The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.

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