AutoCodes – Buick – P0C16 Buick

P0C16 Buick Code - Drive Motor 'B' Inverter Phase W 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: P0C16 Buick indicates Drive Motor 'B' Inverter Phase W 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 540

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 P0C16 Buick 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 P0C16 Buick - Drive Motor 'B' Inverter Phase W Over Temperature - AutoCodes.com — P0C16 Buick Code - Drive Motor 'B' Inverter Phase W Over Temperature

What does this mean?

What are the Possible Causes of the DTC P0C16 Buick?

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

How to Fix the DTC P0C16 Buick?

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 P0C16 Buick 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 P0C16 Buick Code

1. What are the common symptoms of OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- Common symptoms include reduced power, decreased fuel efficiency, and potential drivability issues.

2. What are the possible causes of OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- Possible causes may include a faulty inverter, overheating issues within the drive motor, electrical malfunctions, or sensor failures.

3. How can I diagnose OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- Diagnosis typically involves using a scan tool to read the code, checking for any related codes, inspecting the inverter and drive motor components, and testing the temperature sensors.

4. What are some repair tips for addressing OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- Repair tips may include checking and replacing any damaged wiring, ensuring proper cooling system function, clearing the code after repairs, and testing the vehicle for proper operation.

5. Can driving with OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature cause further damage?

- Continuing to drive with this code present can potentially cause damage to the drive motor or inverter components, leading to more costly repairs.

6. How urgent is it to address OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- It is recommended to address this code as soon as possible to prevent further damage to the vehicle and ensure safe driving conditions.

7. Are there any preventive measures to avoid OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- Regular maintenance, such as checking cooling system components, monitoring temperature sensors, and addressing any warning signs promptly, can help prevent this code from occurring.

8. Can I reset OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature on my own?

- You can attempt to clear the code using a scan tool, but it is crucial to diagnose and address the underlying issue to prevent the code from reoccurring.

9. Is it safe to continue driving my Buick with OBDII code P0C16 related to Drive Motor 'B' Inverter Phase W Over Temperature if the symptoms are not severe?

- While it may be possible to drive the vehicle short distances, it is recommended to address the issue promptly to avoid potential damage and ensure optimal vehicle performance.

10. How much should I expect to pay for repairs related to OBDII code P0C16 in a Buick related to Drive Motor 'B' Inverter Phase W Over Temperature?

- The cost of repairs can vary depending on the exact cause of the issue, but it is recommended to consult with a professional mechanic for an accurate diagnosis and cost estimate.