What system does EFUSE_w159 belong to?

EFUSE_w159 belongs to the Electronic Fuse (EFUSE) system in Tesla vehicles. It is classified as a "warning" type alert in the "battery" category.

TESLA Warning

EFUSE_w159

EFUSE_w159_revBattFaulted

System

EFUSE

Electronic Fuse

Type

Warning

What does EFUSE_w159 mean?

Tesla warning code in the Electronic Fuse (EFUSE) module. This alert is intended to show that the 12V battery was connected in reverse-polarity (negative post to positive harness and vice-versa) but can trigger during normal operation, which is not expected and is currently being investigated. For now, this alert can be ignored. This alert triggered if the reverse battery E-fuse is tripped. It is sometimes triggered along with EFUSE_w148_cabinOverCurrent and EFUSE_w147_frunkOverCurrent as well.

Original Description

This alert is intended to show that the 12V battery was connected in reverse-polarity (negative post to positive harness and vice-versa) but can trigger during normal operation, which is not expected and is currently being investigated. For now, this alert can be ignored. This alert triggered if the reverse battery E-fuse is tripped. It is sometimes triggered along with EFUSE_w148_cabinOverCurrent and EFUSE_w147_frunkOverCurrent as well.

Severity Notes

EFUSE_w159 is a Warning in the Electronic Fuse system. Schedule service soon. Monitor your vehicle for additional warnings.

Other EFUSE Codes

EFUSE_w001 EFUSE_w010 The external 12V supply voltage from the vehicle is out of r... EFUSE_w012 The EFUSE Modeule CPU detected a reset, which can potentiall... EFUSE_w013 EFUSE_w015 EFUSE_w021 EFUSE_w022 EFUSE_w041

View all EFUSE codes →

Tesla alert codes sourced from the community-maintained Tesla Alerts Dictionary. This information is for educational purposes only. Always consult Tesla Service for official diagnosis and repairs.