EFUSE-W141
EFUSE_w141_epas1SelfTestFail
Also written as EFUSE_W141 / EFUSE W141 / EFUSE_w141_epas1SelfTestFail / efuse_w141_epas1selftestfail
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does EFUSE-W141 mean?
Tesla warning code in the Electronic Fuse (EFUSE) module. The power steering can only be disabled due to the presence of "E-fuse self-tests" upon vehicle wake-up. If either the Electric Power Assist Steering (EPAS) primary or EPAS secondary fault at wake-up, there will be no assistance from the start. Sleeping and waking the vehicle will force a re-test, which will pass the next time if the conditions that caused the initial failure are not present. If the failure occurred during the drive itself, it is less likely to be E-fuse related. Once driving is underway with a working EPAS, the E-fuse software state is locked out for safety reasons and only the hardware sensing can make it trip. Both the EPAS circuits would have needed to trip their E-fuse during the journey for this to be the case.?
Original Description
The power steering can only be disabled due to the presence of "E-fuse self-tests" upon vehicle wake-up. If either the Electric Power Assist Steering (EPAS) primary or EPAS secondary fault at wake-up, there will be no assistance from the start. Sleeping and waking the vehicle will force a re-test, which will pass the next time if the conditions that caused the initial failure are not present. If the failure occurred during the drive itself, it is less likely to be E-fuse related. Once driving is underway with a working EPAS, the E-fuse software state is locked out for safety reasons and only the hardware sensing can make it trip. Both the EPAS circuits would have needed to trip their E-fuse during the journey for this to be the case.?
Affected Tesla Models
What You May Notice
- Electronic Fuse alert: The power steering can only be disabled due to the presence of "E-fuse self-tests" upon vehicle wake-up. If either the E
- Related vehicle feature may be reduced or unavailable
- Alert visible in the Tesla app: The power steering can only be disabled due to the presence of "E-fuse self-test
How to Diagnose and Resolve
- 1 Reboot the vehicle by holding both scroll wheels for 10 seconds
- 2 Check for pending OTA software updates in Controls > Software
- 3 If the alert persists, schedule a Tesla Service appointment
- 4 Describe the alert code and any symptoms when booking service
Severity Notes
EFUSE-W141 is a Warning in the Electronic Fuse system. Schedule service soon. Monitor your vehicle for additional warnings.