P0A3F fault code: what it means

P0A3F: BYD (SAE code): drive motor A position sensor circuit. Loss of drive possible.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

motor resolver
wiring
inverter

P0A3F by make

BYD

BYD (SAE code): drive motor A position sensor circuit. Loss of drive possible.

Usual causes: motor resolver; wiring; inverter

GWM

GWM hybrid/EV: drive motor A position sensor circuit. Loss of drive possible.

Usual causes: motor resolver; wiring; inverter

Haval

Haval hybrid: drive motor A position sensor circuit. Loss of drive possible.

Usual causes: motor resolver; wiring; inverter

LDV

LDV EV: drive motor A position sensor circuit. Loss of drive possible.

Usual causes: motor resolver; wiring; inverter

Lexus

Drive motor A position sensor (resolver) circuit on a Lexus hybrid. The hybrid ECU cannot track the motor, so hybrid drive is shut down.

Usual causes: resolver connector or wiring fault at the transmission; failed resolver; inverter/MG ECU fault

MG

MG EV/PHEV: drive motor A position sensor circuit. Loss of drive possible.

Usual causes: motor resolver; wiring; inverter

Toyota

Drive motor A (MG2) position sensor (resolver) circuit fault. The hybrid ECU cannot tell where the motor is, so it shuts the hybrid drive down.

Usual causes: damaged or corroded resolver connector at the transaxle; resolver wiring fault; failed resolver inside the transaxle; inverter/MG ECU fault

What the repair usually costs

EV drive motor bearing noise repair (unit out, bearings replaced)NZ$1,120–NZ$2,950 · A$1,200–A$3,090
EV drive unit / motor replace (exchange or used)NZ$5,580–NZ$15,340 · A$6,120–A$16,200

Not sure what P0A3F means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.