ESP-A039
ESP_a039_FrRWSSOpenOrShortToGnd
What does ESP-A039 mean?
Tesla alert code in the Electronic Stability Program (ESP) module. Short circuit of the WSS_FR sensor line to GND or line interruption (sensor or supply line). Invalid Data Received From Pedal Monitor: Data Length Code, Checksum or Parity invalid Internal electronic fault detected on outlet valves. The unit has detected an internal fault in the outlet valves This error will be set if 2 rotation directions of the sensor signal are in one direction, the other 2 rotations are in the other direction OR 2 rotation directions of the sensor signal have no rotation, 1 rotation in one direction, 1 rotation in other direction Check proper mounting of all four WSS. Monitor clears when all wheel speed sensors show the same rotation for 20 seconds. Voltage at ESP supply pins exceeds specifications
Original Description
Short circuit of the WSS_FR sensor line to GND or line interruption (sensor or supply line). Invalid Data Received From Pedal Monitor: Data Length Code, Checksum or Parity invalid Internal electronic fault detected on outlet valves. The unit has detected an internal fault in the outlet valves This error will be set if 2 rotation directions of the sensor signal are in one direction, the other 2 rotations are in the other direction OR 2 rotation directions of the sensor signal have no rotation, 1 rotation in one direction, 1 rotation in other direction Check proper mounting of all four WSS. Monitor clears when all wheel speed sensors show the same rotation for 20 seconds. Voltage at ESP supply pins exceeds specifications
Severity Notes
ESP-A039 is an Alert in the Electronic Stability Program system. It is generally safe to continue driving, but have it checked at your next scheduled service.