EPAS3P-A064
EPAS3P_a064_phaseCompCorrError
What does EPAS3P-A064 mean?
Tesla alert code in the Electric Power Steering Primary (EPAS3P) module. Phase compensation correlation error Motor position sensor 1 magnetic field not detected Mismatch between primary and secondary ECU application cyclic redundancy check Primary and Secondary ECU are running different versions Flash primary and secondary ECU with same version Phase U bootstrap undervoltage Torque sensor 2 observed failure with the linearity calibrations Invalid ESP_wheelSpeedsChecksum value received Unexpected ESP_wheelSpeedsChecksum value observed EPAS observes expected ESP_wheelSpeedsChecksum High-side FET startup check error Invalid RCM_intertial1Counter value received Invalid SCCM_steeringAngleSensorStatus value received Invalid SCCM_steeringAngleSensorStatus value received by EPAS Valid SCCM_steeringAngleSensorStatus value received by EPAS Gate drive voltage regulator undervoltage Phase W bootstrap undervoltage Yaw damping controller correlation error |torque command path1 - path2| > 10A (0.6Nm) Invalid VCFRONT_LVPowerStateChecksum value received Unexpected VCFRONT_LVPowerStateChecksum received EPAS receives expected VCFRONT_LVPowerStateChecksum value Proportional-integrator motor control error counter exceeds 50% of threshold Motor position sensor 2 logic error The electric power assist steering (EPAS) Electronic Control Unit (ECU) is not receiving the wheel rotation message, resulting in a reduced amount of steering assist to preserve vehicle stability. The electric power assist steering (EPAS) Electronic Control Unit (ECU) does not receive the wheel rotation message. The electric power assist steering (EPAS) Electronic Control Unit (ECU) receives the wheel rotation message. The power steering is operational but the level of assist is decreased and External Angle Controller is inhibited. Torque sensor 2 signal not received Torque Sensor 2 signal not received by EPAS Invalid RCM_intertial1Checksum value received Invalid UI_chassisControlChecksum value received Unexpected UI_chassisControlChecksum value received EPAS recevies expected UI_chassisControlChecksum value UI_chassisControl message not received High-side phase U undervoltage SCCM_steeringAngleSensor message not received SCCM_steeringAngleSensor message is not received by EPAS SCCM_steeringAngleSensor message is received
Original Description
Phase compensation correlation error Motor position sensor 1 magnetic field not detected Mismatch between primary and secondary ECU application cyclic redundancy check Primary and Secondary ECU are running different versions Flash primary and secondary ECU with same version Phase U bootstrap undervoltage Torque sensor 2 observed failure with the linearity calibrations Invalid ESP_wheelSpeedsChecksum value received Unexpected ESP_wheelSpeedsChecksum value observed EPAS observes expected ESP_wheelSpeedsChecksum High-side FET startup check error Invalid RCM_intertial1Counter value received Invalid SCCM_steeringAngleSensorStatus value received Invalid SCCM_steeringAngleSensorStatus value received by EPAS Valid SCCM_steeringAngleSensorStatus value received by EPAS Gate drive voltage regulator undervoltage Phase W bootstrap undervoltage Yaw damping controller correlation error |torque command path1 - path2| > 10A (0.6Nm) Invalid VCFRONT_LVPowerStateChecksum value received Unexpected VCFRONT_LVPowerStateChecksum received EPAS receives expected VCFRONT_LVPowerStateChecksum value Proportional-integrator motor control error counter exceeds 50% of threshold Motor position sensor 2 logic error The electric power assist steering (EPAS) Electronic Control Unit (ECU) is not receiving the wheel rotation message, resulting in a reduced amount of steering assist to preserve vehicle stability. The electric power assist steering (EPAS) Electronic Control Unit (ECU) does not receive the wheel rotation message. The electric power assist steering (EPAS) Electronic Control Unit (ECU) receives the wheel rotation message. The power steering is operational but the level of assist is decreased and External Angle Controller is inhibited. Torque sensor 2 signal not received Torque Sensor 2 signal not received by EPAS Invalid RCM_intertial1Checksum value received Invalid UI_chassisControlChecksum value received Unexpected UI_chassisControlChecksum value received EPAS recevies expected UI_chassisControlChecksum value UI_chassisControl message not received High-side phase U undervoltage SCCM_steeringAngleSensor message not received SCCM_steeringAngleSensor message is not received by EPAS SCCM_steeringAngleSensor message is received
Severity Notes
EPAS3P-A064 is an Alert in the Electric Power Steering Primary system. It is generally safe to continue driving, but have it checked at your next scheduled service.