AutoCodes – Buick – P179B Buick

P179B Buick Code - Transmission Range State Command Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control 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
P179B Buick indicates Transmission Range State Command Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control 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 1,458
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 29, 2022
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Code P179B Buick Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Transmission Range State Command Signal Message Counter is Incorrect.
OBDII Code P179B Buick - Transmission Range State Command Signal Message Counter Incorrect - AutoCodes.com
P179B Buick Code - Transmission Range State Command Signal Message Counter Incorrect

What are the Possible Causes of the DTC P179B Buick?

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How to Fix the DTC P179B 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 P179B 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 P179B Buick Code

1. What are common symptoms of OBDII code P179B in a Buick related to the Transmission Range State Command Signal Message Counter Incorrect?

- Common symptoms include issues with shifting gears, hesitation or jerking during acceleration, and the transmission not engaging properly.

2. What can cause the OBDII code P179B to trigger in a Buick?

- The code can be triggered by a faulty transmission range sensor, wiring issues, or a problem with the transmission control module.

3. How serious is the OBDII code P179B in a Buick?

- This code can affect the drivability of the vehicle and potentially lead to further transmission issues if not addressed promptly.

4. How can I diagnose the OBDII code P179B in my Buick?

- Diagnosis typically involves using a scan tool to read the code, checking the transmission range sensor, inspecting the wiring for any damage, and testing the transmission control module.

5. What are some repair tips for fixing the OBDII code P179B in a Buick?

- Repair tips may include replacing the transmission range sensor, repairing any damaged wiring, or reprogramming the transmission control module.

6. Can I continue driving my Buick with the OBDII code P179B present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further transmission issues and potentially cause more damage.

7. How much does it typically cost to repair the OBDII code P179B in a Buick?

- The cost of repair can vary depending on the exact cause of the code, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can I clear the OBDII code P179B in my Buick with a scan tool?

- Clearing the code with a scan tool may temporarily turn off the check engine light, but the underlying issue causing the code will still need to be addressed to prevent it from returning.

9. Is it possible to prevent the OBDII code P179B from occurring in my Buick?

- Regular maintenance, such as checking and replacing transmission fluid as needed, can help prevent issues that may trigger this code.

10. Will the OBDII code P179B cause my Buick to fail an emissions test?

- Yes, having this code present can cause your Buick to fail an emissions test, as it indicates a problem with the transmission system.

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