Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there is a problem with the part of the car that controls the electric motor. It's like the brain of the motor isn't working right.
The P0A79 code is triggered when the Powertrain Control Module (PCM) detects a performance issue in the inverter for Drive Motor B.
The inverter is responsible for converting DC electricity from the battery into AC electricity to power the electric motor. If the inverter doesn't perform as expected, it can lead to reduced efficiency or performance of the electric drive system.
• Reduced vehicle performance
• Warning light on the dashboard
• Unusual noises from the electric motor
• Faulty inverter
• Poor electrical connections
• Malfunctioning drive motor
Inverter: A device that converts DC electricity to AC electricity.
PCM: Powertrain Control Module, the computer that controls the engine and transmission.
• Check for any other related trouble codes.
• Inspect the inverter and its electrical connections.
• Test the drive motor for proper operation.
• Repair or replace the inverter.
• Ensure all electrical connections are secure.
• Replace the drive motor if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$500 - $1500
Difficult
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance of the electric drive system
• Ensure proper cooling of the inverter
• Check electrical connections periodically
Engine Performance
• Avoid driving aggressively until the issue is resolved.
• Consult a professional mechanic for diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on hybrid components.
This code has been more prevalent with the increase in hybrid and electric vehicles.
High – This issue can affect the drivability of the vehicle.
Driving with this issue may lead to reduced vehicle performance and safety risks.
• Vehicle at operating temperature
• Inverter under load conditions
The inverter is typically located near the battery pack or engine compartment.
Q: Can I drive my car with a P0A79 code?
A: It's not recommended as it can lead to reduced performance and potential safety risks.
Q: Is a P0A79 code expensive to fix?
A: It can be costly, ranging from $500 to $1500 depending on the exact issue.
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