P0A93 – Inverter ‘A’ Cooling System Performance

P0A93 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P0A93 Possible Causes

Faulty Inverter cooling system,Inverter cooling system harness is open or shorted,Inverter cooling system circuit poor electrical connection,Faulty Water pump with motor assembly,Faulty Cooling fan motor,Faulty No. 2 cooling fan motor,Faulty Inverter with converter assembly

P0A93 Description

The inverter converts the high-voltage direct current of the HV battery into the alternating current for the MG1 and the MG2. The inverter generates heat during the conversion process, and this heat could damage the inverter if a cooling system is unavailable. Therefore, similar to the MG1 and the MG2, the inverter is cooled by a dedicated cooling system, which consists of an electric water pump, cooling fan, and radiator. This cooling system is independent of the engine cooling system.