P0C3B - DC/DC Converter Temperature Sensor 'A' High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

P0C3B Possible Causes

  • Faulty Inverter with converter assembly

First diagnose P0C3B code

    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 terminals.

Cost of diagnosing the P0C3B code

    Labor: 1.0

    The cost of diagnosing the P0C3B code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P0C3B Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0C3B Meaning

The MG ECU detects the temperature of the boost converter using the temperature sensor built into the boost converter. The boost converter using the temperature sensor outputs voltage which changes between 0.5 and 4.5 V in response to a change in temperature. 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 limit load based on signals sent from the boost converter temperature sensor to help prevent overheating. The MG ECU also detects malfunctions in the boost converter temperature sensor and its wiring.
OBDII Code P0C3B - DC/DC Converter Temperature Sensor 'A' High - Engine-Codes.com

P0C3B More Information

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P0C3B Information for specific makes

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