TESLA Alert
EPAS3P-A021
EPAS3P_a021_phaseWlowUv
Also written as EPAS3P_A021 / EPAS3P A021 / EPAS3P_a021_phaseWlowUv / epas3p_a021_phasewlowuv
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 EPAS3P-A021 mean?
Tesla alert code in the Electric Power Steering Primary (EPAS3P) module. Low-side phase W undervoltage
Original Description
Low-side phase W undervoltage
Affected Tesla Models
Model 3Model Y
What You May Notice
- Electric Power Steering Primary alert: Low-side phase W undervoltage
- Steering is functional but may feel slightly different
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Check for OTA software updates
- 3 Schedule service if the steering feels abnormal
Severity Notes
EPAS3P-A021 is an Alert in the Electric Power Steering Primary system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.
Other EPAS3P Codes
EPAS3P_a001 EPAS3P_a002 EPAS3P_a003 Tesla alert code in the Electric Power Steering Primary (EPA... EPAS3P_a004 Tesla alert code in the Electric Power Steering Primary (EPA... EPAS3P_a005 EPAS3P_a006 EPAS3P_a007 EPAS3P_a008 Tesla alert code in the Electric Power Steering Primary (EPA...
View all EPAS3P codes →