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P16F6 Buick Code - Control Module Range State Command

Quick Answer

The P16F6 Buick code indicates that there is an issue with the control module range state command in the vehicle. Common causes include Faulty wiring, Malfunctioning control module, Sensor issues. 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 wiring, Malfunctioning control module, Sensor issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P16F6 Buick Description

The P16F6 Buick code indicates that there is an issue with the control module range state command in the vehicle. This means that the control module responsible for managing various systems in the vehicle, such as the engine, transmission, and emissions, is not receiving or sending the correct range state command signals. This can lead to a range of performance issues and potentially affect the overall drivability of the vehicle.

OBDII Code P16F6 Buick - Control Module Range State Command
P16F6 Buick Code - Control Module Range State Command

Common Causes of P16F6 Buick

  1. Faulty wiring
  2. Malfunctioning control module
  3. Sensor issues
  4. Software glitches

Symptoms of P16F6 Buick

  1. Rough idling
  2. Stalling
  3. Poor acceleration
  4. Decreased fuel efficiency
  5. Transmission shifting problems

How to Fix P16F6 Buick

  1. Perform a diagnostic scan to retrieve the specific trouble codes.
  2. Inspect the wiring and connectors related to the control module range state command.
  3. Test the control module and sensors for proper functionality.
  4. Update or reprogram the control module software if necessary.
  5. Clear the trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P16F6 Buick

The typical repair costs for addressing the P16F6 Buick code can vary depending on the specific cause of the issue. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. However, it is important to note that the actual cost may be higher or lower based on factors such as location, vehicle make and model, and the extent of the repairs needed. It is recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may vary.

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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 ($100–$150) and potential repairs like module replacement ($500–$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.

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