AutoCodes – Buick – P155D Buick

P155D Buick Code - Hill Descent Control 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
P155D Buick indicates Hill Descent Control 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 379
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 28, 2022
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Code P155D 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 Hill Descent Control Message Counter is Incorrect.
OBDII Code P155D Buick - Hill Descent Control Message Counter Incorrect - AutoCodes.com
P155D Buick Code - Hill Descent Control Message Counter Incorrect

What are the Possible Causes of the DTC P155D 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 P155D 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 P155D 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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Need Help with the Code?

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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 P155D Buick Code

1. What are the common symptoms of OBDII code P155D in a Buick related to the Hill Descent Control Message Counter Incorrect?

The common symptoms include the illumination of the check engine light, a message indicating "Hill Descent Control Message Counter Incorrect," and possible issues with the Hill Descent Control system functionality.

2. What could cause the OBDII code P155D in a Buick to trigger?

This code typically triggers due to a discrepancy between the expected and actual number of messages related to the Hill Descent Control system being received by the vehicle's computer.

3. How can I diagnose the cause of OBDII code P155D in my Buick?

Diagnosing this code may involve checking the wiring and connections related to the Hill Descent Control system, inspecting the control module for faults, and verifying the proper functioning of relevant sensors.

4. Can driving with the OBDII code P155D in a Buick be dangerous?

While the code itself may not pose immediate danger, it's essential to address the underlying issue to ensure the proper functioning of the Hill Descent Control system, especially in situations where the feature is needed for safe driving.

5. What are some repair tips for resolving the OBDII code P155D in a Buick?

Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, resetting the system, or replacing faulty components like sensors or the control module if necessary.

6. Is it possible to clear the OBDII code P155D in a Buick without addressing the underlying issue?

Clearing the code without fixing the underlying problem may temporarily turn off the check engine light, but the issue will likely persist and trigger the code again until properly resolved.

7. Can I continue driving my Buick with the OBDII code P155D activated?

While it may be possible to drive the vehicle with the code present, it's recommended to address the problem promptly to avoid potential issues with the Hill Descent Control system and ensure overall vehicle safety.

8. How much does it typically cost to repair the OBDII code P155D in a Buick?

The cost of repairs for this code can vary depending on the underlying cause, such as replacing components, addressing wiring issues, or resetting the system. It's advisable to consult a mechanic for an accurate estimate.

9. Will the OBDII code P155D in a Buick affect the vehicle's performance?

While the code may not directly impact the vehicle's performance, addressing it promptly is crucial to prevent potential issues with the Hill Descent Control system and ensure all vehicle systems are functioning correctly.

10. Can I reset the OBDII code P155D in a Buick using an OBDII scanner?

It may be possible to reset the code using an OBDII scanner, but it's important to address the underlying cause first to prevent the code from reoccurring.

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