Symptoms you may notice
- Coolant level dropping with no obvious external leak
- Whining or grinding from the inverter coolant pump
- Power derating or reduced output once the car is warm
- Often accompanied by hybrid battery performance complaints

Inverter
The inverter is running hotter than it should. This is a code worth taking seriously because sustained inverter overheating can damage power electronics that are far more expensive than a cooling repair.
Vehicles we see this on
If your car is storing P0A93 and you are unsure what to do next, send us the full scan output rather than just this one code. The surrounding readings usually tell us far more than the code on its own.
Questions
Related codes
Send us the code and the symptoms on WhatsApp. We will tell you what it usually means on your model and roughly what it costs before you bring the car in.