Technical Service Bulletin T-SB-0043-23 Rev1 — 2021 TOYOTA MIRAI
ENGINE
Bulletin Details
| TSB ID | T-SB-0043-23 Rev1 |
| Manufacturer | |
| Vehicle | 2021 TOYOTA MIRAI |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
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.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2021 TOYOTA MIRAI
22TD01
ELECTRICAL SYSTEM
T-SB-0047-23
BACK OVER PREVENTION
T-SB-0043-23
SERVICE BRAKES, HYDRAULIC
22TD01
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
22TD01RL
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
22TD01TI
EQUIPMENT:ELECTRICAL
22TD01
LANE DEPARTURE
22TD01TI
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
22TC04
ELECTRICAL SYSTEM:SOFTWARE
22TC04
ELECTRICAL SYSTEM