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AutoCodes – Generic – P0C14

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

Quick Answer

The Power Inverter Module, often referred to as the Drive Motor Generator Power Inverter Module, contains two motor control modules and the hybrid powertrain control module. Common causes include Low coolant level in the hybrid cooling system reservoir, Faulty coolant pump. 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 Low coolant level in the hybrid cooling system reservoir, Faulty coolant pump.
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.
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Code Popularity 3,486
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on May 11, 2019
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Code P0C14 Description

The Power Inverter Module, often referred to as the Drive Motor Generator Power Inverter Module, contains two motor control modules and the hybrid powertrain control module. Each motor control modules operates its respective drive motor generator based upon hybrid powertrain control module commands. Each motor control modules controls the speed, direction and output torque of its respective drive motor generator through the sequencing actuation of high current switching transistors called insulated gate bipolar transistors. Each drive motor generator operates utilizing 3 phase AC. 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 modules monitors the temperature of each phase in order to detect power inverter module overtemperature conditions.
OBDII Code P0C14 - Drive Motor 'B' Inverter Phase U Over Temperature - AutoCodes.com
P0C14 Code - Drive Motor 'B' Inverter Phase U Over Temperature
What does this mean?

What are the Possible Causes of the DTC P0C14?

  • Low coolant level in the hybrid cooling system reservoir
  • Faulty coolant pump

How to Fix the DTC P0C14?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0C14 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0C14 code?

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Need Help with the Code?

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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.

Discuss the causes and fixes for P0C14 OBDII Code

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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
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