P26C5 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 P26C5. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• TSB 22-2153 Service bulletin
  2022-05-04 · Electrical System — Propulsion System — Traction Battery — Management System/Energy Control Module (Bms/Becm) — Software
• This article supersedes TSB 21-2011 to update the vehicle model years affected and Service Procedure. Some 2018-2022 Mustang vehicles may exhibit various concerns with the active exhaust system. These may include Drive Mode Not Available or Exhaust Mode Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BF
• TSB 22-2282 Service bulletin
  2022-10-04 · Engine And Engine Cooling — Exhaust System
• Some 2018-2022 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Drive Mode Not Available or Exhaust Mode Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seate
• TSB 23-2132 Service bulletin
  2023-05-04 · Engine And Engine Cooling — Exhaust System
• Some 2018-2023 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Exhaust Mode Selection Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system.
• TSB 25-2146 Service bulletin
  2025-04-11 · Unknown Or Other
• This article supersedes 23-2132 to update the labor times from M-time to M-Time with a limit. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: * "Exhaust Mode Selection Not Available" messages * Illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BF
• TSB 25-2144 Service bulletin
  2025-04-11 · Unknown Or Other
• Some of the vehicles listed in the Model statement above may exhibit one or more of the following conditions that lead to needing to perform the calibration (alignment) procedure on exhaust tailpipe actuators: * An illuminated malfunction indicator lamp (MIL) and an Exhaust mode not available message in the instrument panel cluster (IPC) with diagnostic trouble codes (DTCs) P26FE, P2BFB, P26C5:7
• TSB 21-2011 Service bulletin
  2021-03-26 · Equipment
• Some 2020 Mustang GT500 vehicles built on or before 28-Aug-2020 may exhibit various concerns with the active exhaust system. These may include "Drive Mode Not Available" or "Exhaust Mode Not Available" messages, and/or diagnostic trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD, and/or P2BFA. This may be due to pinched wiring or a misaligned bracket where the exha

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.