EPAS-D037
EPAS_d037_KFC_FOR_LENGTH
Also written as EPAS_D037 / EPAS D037 / EPAS_d037_KFC_FOR_LENGTH / epas_d037_kfc_for_length
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 EPAS-D037 mean?
Tesla diagnostic code in the EPAS (EPAS) module. Motor Driver: The Comparison of the Voltage Length Angle has failed. The deviation between the voltage vectors of the Pulse Width Modulation (PWM) output and the Voltage phasor, which is using the synchronous generated voltage, phase current, and the Motor model, is calculated as too large. The length difference between the voltage vector (from which the Emf calculates the measured currents), the motor model, and the voltage vector extending through the terminal voltage (PWM) is too large. The FOR has to be active, the rotor speed less than 6000rpm, and ECU-Home must be passed 100ms.
Original Description
Motor Driver: The Comparison of the Voltage Length Angle has failed. The deviation between the voltage vectors of the Pulse Width Modulation (PWM) output and the Voltage phasor, which is using the synchronous generated voltage, phase current, and the Motor model, is calculated as too large. The length difference between the voltage vector (from which the Emf calculates the measured currents), the motor model, and the voltage vector extending through the terminal voltage (PWM) is too large. The FOR has to be active, the rotor speed less than 6000rpm, and ECU-Home must be passed 100ms.
Affected Tesla Models
What You May Notice
- EPAS alert: Motor Driver: The Comparison of the Voltage Length Angle has failed. The deviation between the voltage vectors of the Pu
- 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
EPAS-D037 is a diagnostic or informational code in the EPAS system. Typically no immediate action is required.