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Engine-Codes – Generic – P0C14

P0C14 Code - Drive Motor 'B' Inverter Phase U Over Temperature

Quick Answer

The diagnostic trouble code P0C14 indicates a problem with the Drive Motor 'B' Inverter Phase U being over temperature. Common causes include Faulty cooling system for the inverter, Electrical short circuits or wiring issues, Overloading of the drive motor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0C14 indicates Drive Motor 'B' Inverter Phase U Over Temperature.
Common causes
Common causes include Faulty cooling system for the inverter, Electrical short circuits or wiring issues, Overloading of the drive motor.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0C14 Description

The diagnostic trouble code P0C14 indicates a problem with the Drive Motor 'B' Inverter Phase U being over temperature. In an electric or hybrid vehicle, the drive motor inverter is responsible for converting the direct current (DC) electricity from the battery into alternating current (AC) electricity to power the electric motor. Phase U refers to one of the three output phases of the inverter.

OBDII Code P0C14 - Drive Motor 'B' Inverter Phase U Over Temperature
P0C14 Code - Drive Motor 'B' Inverter Phase U Over Temperature

Common Causes of P0C14

  1. Faulty cooling system for the inverter
  2. Electrical short circuits or wiring issues
  3. Overloading of the drive motor
  4. Inverter component failure
  5. Environmental factors such as high ambient temperatures

Symptoms of P0C14

  1. Reduced power or acceleration
  2. Warning light illuminated on the dashboard
  3. Inability to switch between drive modes (e.g., eco, sport)
  4. Unusual noises coming from the drive motor or inverter
  5. Vehicle entering a reduced power mode or limp home mode

How to Fix P0C14

  1. Perform a diagnostic scan to confirm the P0C14 code and identify the specific issue with the Drive Motor 'B' Inverter Phase U.
  2. Inspect the cooling system for any leaks, blockages, or malfunctions that may be causing the inverter to overheat.
  3. Check the electrical connections and wiring related to the inverter for any signs of damage or corrosion and repair or replace as needed.
  4. Test the drive motor and inverter components to ensure they are functioning within the manufacturer's specifications.
  5. Clear the trouble code from the vehicle's system and test drive to verify that the issue has been resolved.

Cost to Fix P0C14

The cost of repairing a Drive Motor 'B' Inverter Phase U Over Temperature issue can vary depending on the extent of the damage and the specific repairs needed. In general, parts and labor for this type of repair can range from $500 to $1500 or more. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically between $80 and $150. Additionally, the cost of parts such as the inverter components or cooling system parts will also contribute to the overall repair bill. For a more accurate estimate, it's recommended to consult with a qualified mechanic or electric vehicle specialist.

When is the Code Detected?

The code is set when the control unit has detected an in-range over-temperature condition that can potentially damage inverter.

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Code P0C14 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0C14 Code

No Frequently Asked Questions about P0C14 Code found.

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  • Chevrolet Volt 2011 doesn't start. We find
    Permament Errors: P014, P0C15, P0A0C
    Pending and Confirmed Errors: P1E00, P0A0C

    Reply to Comment

  • You should start by letting cool down your vehicle and check the coolant level in the hybrid cooling system reservoir, then try to clear the codes.

    Reply to Comment