Service bulletins for the 2021 Toyota Mirai
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
121 on file from NHTSA, as of 2026-10-19.
About P1F6C on the 2021 Toyota Mirai: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P1F6C are shown. Show all
| T-SB-0043-23 Rev1 | 2025-04-08. Service bulletin. ENGINE. Some 2021 – 2022 model year Mirai vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: •P1F6C71 – Air Sealing Valve Actuator Stuck •P1F6E71 – Air Pressure Regulating Valve Actuator Stuck The EV control computer logic has been modified to reduce the possibility of this condition. |
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| T-SB-0043-23 Rev1 | 2025-03-11. Service bulletin. ENGINE. Some 2021 – 2022 model year Mirai vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: •P1F6C71 – Air Sealing Valve Actuator Stuck •P1F6E71 – Air Pressure Regulating Valve Actuator Stuck The EV control computer logic has been modified to reduce the possibility of this condition. |
| TTT073823 | 2023-10-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: MIL On with DTCs P1F6C71 and/or P1F6E71 |
| T-SB-0043-23 | 2023-08-28. Service bulletin. SERVICE BRAKES, HYDRAULIC. TSB: Some 2021 ? 2022 model year Mirai vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: ?P1F6C71 ? Air Sealing Valve Actuator Stuck ?P1F6E71 ? Air Pressure Regulating Valve Actuator Stuck |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.