AutoCodes – Cadillac – P0C14 Cadillac

P0C14 Cadillac 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 Cadillac 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 1,304

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0C14 Cadillac 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 Cadillac - Drive Motor 'B' Inverter Phase U Over Temperature - AutoCodes.com — P0C14 Cadillac Code - Drive Motor 'B' Inverter Phase U Over Temperature

What does this mean?

What are the Possible Causes of the DTC P0C14 Cadillac?

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

How to Fix the DTC P0C14 Cadillac?

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 Cadillac 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.

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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 Cadillac Code

1. What are common symptoms of OBDII code P0C14 in a Cadillac related to Drive Motor 'B' Inverter Phase U Over Temperature?

- Common symptoms include reduced power, overheating warnings, and potential drivability issues.

2. What are some possible causes of the Drive Motor 'B' Inverter Phase U Over Temperature fault code in a Cadillac?

- Causes may include a faulty inverter, overheating due to high loads or driving conditions, or issues with the cooling system.

3. How can I diagnose the Drive Motor 'B' Inverter Phase U Over Temperature issue in my Cadillac?

- Diagnosis typically involves checking the inverter system for faults, testing the cooling system, and inspecting the drive motor components.

4. What are the recommended repair steps for resolving the P0C14 code in a Cadillac?

- Repair may involve addressing any cooling system issues, replacing faulty inverter components, and ensuring proper airflow to the drive motor.

5. Can driving with the OBDII code P0C14 present cause further damage to my Cadillac?

- Continuing to drive with this code present can potentially lead to increased overheating and damage to the drive motor components, so prompt attention is recommended.

6. Are there any maintenance tips to help prevent the Drive Motor 'B' Inverter Phase U Over Temperature issue in a Cadillac?

- Maintaining proper cooling system function, monitoring drive motor performance, and avoiding high-stress driving conditions can help prevent this issue.

7. How serious is the Drive Motor 'B' Inverter Phase U Over Temperature fault code in a Cadillac?

- This fault code should be taken seriously as it can impact the performance and longevity of the drive motor and related components.

8. Can a DIY enthusiast address the P0C14 code in a Cadillac, or is professional assistance recommended?

- While some basic diagnostics can be performed by DIY enthusiasts, resolving the underlying issues causing the code may require professional expertise and specialized tools.

9. How long does it typically take to repair the Drive Motor 'B' Inverter Phase U Over Temperature issue in a Cadillac?

- The repair time can vary depending on the specific cause of the code, but it may range from a few hours to a full day of work.

10. Is it safe to clear the P0C14 code and continue driving my Cadillac without addressing the underlying issue?

- Clearing the code without addressing the root cause can lead to recurring problems and potential damage, so it is not recommended to ignore the issue.