P0C3A Possible Causes
- Faulty inverter with converter assembly
What Does It Mean?
How to Fix Code P0C3A
Check the “possible causes” listed above. Visually inspect the cable harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P0C3A Possible Symptoms
Engine light on (or service engine soon warning light)
P0C3A Meaning
The MG ECU detects the boost converter temperature using the temperature sensor integrated into the boost converter. The boost converter using the temperature sensor delivers a voltage that varies between 0.5 and 4.5 V in response to temperature changes. The higher the boost converter temperature, the lower the output voltage. Conversely, the lower the boost converter temperature, the higher the output voltage. The MG ECU limits the load based on signals sent by the boost converter temperature sensor to help prevent overheating. The MG ECU also detects malfunctions in the boost converter temperature sensor and its wiring.