P0C79

Drive Motor A Inverter Voltage Too High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–889 (est.)

Symptoms

Check Engine light comes on
Reduced power or hybrid system failure
The car goes into emergency mode
Unusual sounds from the engine compartment
Reduced performance of the hybrid system

Causes

Motor inverter fault A
Problems with high voltage battery
Hybrid control system malfunction
Damage to high voltage wires or connectors
Software errors in the control unit

How to Fix

Check the condition of the high-voltage battery
Diagnose motor inverter A
Check the integrity of high-voltage connections
Update control unit software
If necessary, replace the inverter or its components

Related codes

P0C7A P0C7B P0C7C