AutoCodes – GMC – P0C11 GMC

P0C11 GMC Code - Drive Motor 'A' 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: P0C11 GMC indicates Drive Motor 'A' 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 1,735

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 May 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0C11 GMC 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 P0C11 GMC - Drive Motor 'A' Inverter Phase U Over Temperature - AutoCodes.com — P0C11 GMC Code - Drive Motor 'A' Inverter Phase U Over Temperature

What does this mean?

What are the Possible Causes of the DTC P0C11 GMC?

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

How to Fix the DTC P0C11 GMC?

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 P0C11 GMC 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 P0C11 GMC Code

1. What are the common symptoms of OBDII code P0C11 GMC (Drive Motor 'A' Inverter Phase U Over Temperature)?

- Common symptoms include reduced electric vehicle performance, warning lights on the dashboard, and potential overheating issues.

2. What are the possible causes of OBDII code P0C11 GMC?

- The code may be triggered by a malfunctioning drive motor 'A' inverter phase U, overheating issues within the inverter system, or electrical faults.

3. How serious is OBDII code P0C11 GMC?

- This code should be addressed promptly to avoid further damage to the electric drive system and ensure safe operation of the vehicle.

4. Can I still drive my vehicle with OBDII code P0C11 GMC present?

- It is not recommended to continue driving the vehicle with this code active, as it can lead to more severe problems and potential failures.

5. How can I diagnose OBDII code P0C11 GMC?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the fault code and conducting further testing on the drive motor inverter system.

6. What are some repair tips for fixing OBDII code P0C11 GMC?

- Repair may involve checking and repairing wiring connections, inspecting the inverter system for overheating issues, and potentially replacing faulty components.

7. Can I reset OBDII code P0C11 GMC with a simple reset tool?

- While you can attempt to clear the code with a reset tool, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P0C11 GMC?

- Repair costs can vary depending on the extent of the issue, but it is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

9. Are there any preventative measures to avoid OBDII code P0C11 GMC in the future?

- Regular maintenance checks on the electric drive system, monitoring cooling systems, and addressing any warning signs promptly can help prevent this code from appearing.

10. Is OBDII code P0C11 GMC specific to GMC vehicles only?

- While the code specifies GMC, similar issues may occur in other electric or hybrid vehicles with drive motor inverter systems, requiring similar diagnostic and repair procedures.