OBD-II code · Powertrain (generic)
P0A93 Inverter A Cooling System Performance
The hybrid control module detects insufficient cooling performance for inverter A, where coolant temperature rise per power dissipation exceeds expected value.
Is it safe to drive with P0A93?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCoolant pump weak
- PossibleLow coolant level
Repair at a glance
- Difficulty
- Shop_only
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Hybrid Inverter, Electric Coolant Pump, Coolant Radiator
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.