P0AC0 fault code: what it means

P0AC0: BYD (SAE code): hybrid battery current sensor circuit.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

current sensor
wiring
BMS

P0AC0 by make

BYD

BYD (SAE code): hybrid battery current sensor circuit.

Usual causes: current sensor; wiring; BMS

Lexus

Hybrid battery current sensor range/performance on a Lexus hybrid: current reading in/out of the battery is not plausible.

Usual causes: failed battery current sensor; sensor wiring or connector fault; battery ECU fault

MG

MG EV/PHEV: hybrid battery current sensor circuit.

Usual causes: current sensor; wiring; BMS

Toyota

Hybrid battery current sensor range/performance: the sensor measuring current in and out of the hybrid battery reads implausibly. Hybrid ECU limits or shuts down.

Usual causes: failed current sensor in the battery junction block; sensor wiring or connector fault; battery ECU fault

What the repair usually costs

Hybrid battery reconditioned exchange (Aqua / Prius C / Axio / Fielder)NZ$1,360–NZ$2,430 · A$1,390–A$2,370
Hybrid battery reconditioned exchange (Prius 20 / 30 / Prius alpha / Prius V)NZ$1,640–NZ$2,790 · A$1,880–A$3,550
Hybrid battery reconditioned exchange (Camry / Estima / Lexus / RAV4)NZ$2,140–NZ$4,150 · A$2,650–A$5,000
Hybrid battery new aftermarket (Aqua / Prius C)NZ$2,080–NZ$3,010 · A$2,350–A$3,610

Not sure what P0AC0 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.