P0C12 Possible Causes
- Drive Motor “A” Inverter faulty
- Drive Motor “A” Inverter harness is open or shorted
- Poor electrical connection in Drive Motor “A” Inverter circuit
What does it mean?
How to fix code P0C12
Check the “Possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is code P0C12 detected?
The code is set when the control unit has detected an overheating condition in the range that could potentially damage the inverter.
P0C12 Possible Symptoms
Engine light on (or service engine soon warning light)
P0C12 Meaning
The Power Inverter Module, often referred to as the Power Inverter Power Generator Module, contains two motor control modules and the hybrid powertrain control module. Each motor control module operates its respective drive motor generator based on commands from the hybrid powertrain control module. Each motor control module controls the speed, direction, and output torque of its respective drive motor generator through the sequential activation of high-current switching transistors called Insulated Gate Bipolar Transistors. Each drive motor generator operates using three-phase alternating current. Each Insulated Gate Bipolar Transistor operates a single phase of the drive motor generator. Each phase is individually identified as U, V, and W. Each motor control module monitors the temperature of each phase to detect inverter module overheating conditions.