P0A93 Possible Causes
- Faulty inverter cooling system
- Inverter cooling system harness is open or shorted
- Poor electrical connection in inverter cooling system circuit
- Faulty water pump with motor assembly
- Faulty cooling fan motor
- Faulty cooling fan motor No. 2
- Faulty inverter with converter assembly
What Does It Mean?
How to Fix Code P0A93
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P0A93 Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P0A93 Meaning
The inverter converts high voltage DC current from the HV battery to AC current for MG1 and MG2. The inverter generates heat during the conversion process, and this heat can damage the inverter if no cooling system is available. Therefore, similar to MG1 and 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.