Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the cooling system for a part called the 'inverter' isn't working well. It's like if your computer was getting too hot because the fan wasn't cooling it down properly.
The code P0A93 indicates a problem with the cooling system of the inverter, which is part of the hybrid system in a vehicle. The inverter changes electricity from the battery to power the electric motor, and it needs to be kept cool to work properly.
The inverter in a hybrid vehicle converts DC electricity from the battery into AC electricity for the electric motor. It generates heat during this process, and a dedicated cooling system is used to prevent overheating. The P0A93 code is triggered when the vehicle's control module detects that the inverter cooling system is not performing as expected, which could lead to overheating and potential damage to the inverter.
• Warning light on the dashboard
• Reduced vehicle performance
• Overheating of the inverter system
• Low coolant level in the inverter cooling system
• Faulty inverter coolant pump
• Blocked or restricted inverter coolant passages
Inverter: A device that converts DC electricity to AC electricity.
Coolant: A fluid used to prevent overheating by transferring heat away from components.
• Check the coolant level in the inverter cooling system.
• Inspect the inverter coolant pump for proper operation.
• Check for any blockages or restrictions in the cooling system passages.
• Refill the inverter coolant to the proper level.
• Replace the inverter coolant pump if it is not functioning.
• Clear any blockages in the cooling system.
• Coolant funnel
• Multimeter
• Cooling system pressure tester
$150 - $500
Moderate
• Toyota Prius
• Honda Insight
• Chevrolet Volt
• Regularly check and maintain the coolant level.
• Inspect the cooling system components periodically.
• Ensure the cooling passages are clear of debris.
Cooling System Performance
• Do not ignore the warning light; address the issue promptly.
• Avoid driving the vehicle if overheating is suspected.
• Schedule regular maintenance checks for the cooling system.
Check with the vehicle manufacturer for warranty coverage on hybrid components.
The P0A93 code has been reported primarily in hybrid vehicles, especially those with high mileage or inadequate maintenance of the cooling system.
High – This issue can lead to inverter damage if not addressed promptly.
Driving with an overheating inverter can cause damage to the vehicle and may void warranties.
• Engine running
• Vehicle at operating temperature
The inverter is typically located near the engine bay, connected to the battery and electric motor.
Q: Can I drive with a P0A93 code?
A: It's not recommended to drive with this code active, as it can lead to overheating and damage to the inverter.
Q: How do I know if the inverter coolant pump is working?
A: You can check for coolant flow in the reservoir or listen for the pump operation when the vehicle is on.
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