P0A84 fault code: what it means

P0A84: Hybrid battery cooling fan 1 control circuit low on a Lexus hybrid.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

fan wiring short
failed fan motor or fan controller
battery ECU fault

P0A84 by make

Lexus

Hybrid battery cooling fan 1 control circuit low on a Lexus hybrid.

Usual causes: fan wiring short; failed fan motor or fan controller; battery ECU fault

Toyota

Hybrid battery cooling fan 1 control circuit low: electrical fault in the hybrid battery fan control circuit.

Usual causes: fan wiring short or open; failed fan motor or fan control module; battery ECU fault

What the repair usually costs

Radiator cooling fan motor or fan assemblyNZ$350–NZ$1,280 · A$330–A$1,210
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

Not sure what P0A84 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.