P0A78

Drive Motor A Inverter Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Hybrid system power reduction
Check Engine Light Illuminates
The vehicle goes into emergency mode
Unusual noises from the power plant
Reduced performance of the hybrid system

Causes

Motor inverter fault
Inverter cooling problems
Open or short circuit in the inverter circuits
Damage to control electronics
Problems with high voltage battery

How to Fix

High Voltage System Diagnostics
Checking the inverter cooling system
Testing the inverter operation
Checking the integrity of wiring harnesses
Replacing a faulty inverter if necessary

Related codes

P0A7A P0A7F P0A80