AutoCodes – Buick – P16F6 Buick

P16F6 Buick Code - Control Module Range State Command

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter Module circuit poor electrical connection. 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: P16F6 Buick indicates Control Module Range State Command.
Common causes: Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter Module circuit poor electrical connection.
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 879

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 Jan 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P16F6 Buick Description

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module is internal to the drive motor generator power inverter module, and is not serviced separately. The hybrid powertrain control module monitors its ability to read and write to the memory. The hybrid powertrain control module processor monitors the data to verify that the commanded range state calculation is correct.

OBDII Code P16F6 Buick - Control Module Range State Command - AutoCodes.com — P16F6 Buick Code - Control Module Range State Command

What does this mean?

What are the Possible Causes of the DTC P16F6 Buick?

Faulty Drive Motor Generator Power Inverter Module
Drive Motor Generator Power Inverter Module harness is open or shorted
Drive Motor Generator Power Inverter Module circuit poor electrical connection

How to Fix the DTC P16F6 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 P16F6 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 P16F6 Buick Code

1. What does the OBDII code P16F6 mean on a Buick?

P16F6 indicates an issue with the Control Module Range State Command, often related to communication or performance problems in the transmission control module (TCM) or engine control module (ECM).

2. What are the common symptoms of the P16F6 code in a Buick?

Symptoms may include illuminated check engine light, erratic transmission shifting, loss of power, or the vehicle entering limp mode.

3. What causes the P16F6 code on a Buick?

Possible causes include faulty TCM or ECM, wiring issues, poor electrical connections, or corrupted software in the control modules.

4. Can I drive my Buick with the P16F6 code active?

Driving with this code is not recommended, as it may lead to further transmission or engine performance issues and could leave the vehicle inoperable.

5. How is the P16F6 code diagnosed on a Buick?

A technician will use a scan tool to retrieve the code, inspect wiring and connections, test the TCM and ECM, and verify module communication and functionality.

6. Can a software update fix the P16F6 code?

In some cases, a software update or reprogramming of the TCM or ECM may resolve the issue if the problem is software-related.

7. How much does it cost to fix the P16F6 code on a Buick?

Repair costs can vary but typically include diagnostic fees ($100â€“$150) and potential repairs like module replacement ($500â€“$1,000) or rewiring, depending on the root cause.

8. Can a dead battery cause the P16F6 code in my Buick?

Yes, a weak or dead battery can cause voltage issues, leading to communication errors between control modules, which may trigger the P16F6 code.

9. Is the P16F6 code specific to Buicks?

While P16F6 is more commonly reported in Buicks, it can also appear in other GM vehicles with similar systems.

10. What should I do if the P16F6 code reappears after repairs?

If the code persists, have the vehicle re-inspected for wiring issues, faulty modules, or incomplete programming, and ensure that all connections are secure and functional.