AutoCodes – Buick – P1591 Buick

P1591 Buick Code - Body Control Module Engine Speed Request 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 Body Control Module, Body Control Module harness is open or shorted, Body 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: P1591 Buick indicates Body Control Module Engine Speed Request Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Body Control Module, Body Control Module harness is open or shorted, Body 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 373

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 Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1591 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 Body Control Module Engine Speed Request Signal Message Counter is Incorrect.

OBDII Code P1591 Buick - Body Control Module Engine Speed Request Signal Message Counter Incorrect - AutoCodes.com — P1591 Buick Code - Body Control Module Engine Speed Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P1591 Buick?

Faulty Body Control Module
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection

How to Fix the DTC P1591 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 P1591 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 P1591 Buick Code

1. What are the common symptoms of OBDII code P1591 in a Buick related to the Body Control Module Engine Speed Request Signal Message Counter Incorrect?

- Common symptoms include engine stalling, rough idling, and issues with acceleration.

2. What could cause the OBDII code P1591 to trigger in a Buick?

- The code P1591 can be triggered by a faulty body control module, issues with the engine speed sensor, or a communication error between modules.

3. How can I diagnose the OBDII code P1591 in my Buick?

- Diagnosis involves using a scan tool to retrieve the specific fault codes, checking the connections to the body control module and engine speed sensor, and testing the signal communication between modules.

4. What are some repair tips for resolving OBDII code P1591 in a Buick?

- Repair tips may include checking and repairing any wiring or connection issues, replacing a faulty body control module or engine speed sensor, and performing a reprogramming or reset of the modules.

5. Can I continue driving my Buick with the OBDII code P1591 present?

- It is not recommended to continue driving with the code present, as it can lead to further engine performance issues and potential safety concerns.

6. How much does it typically cost to repair the OBDII code P1591 in a Buick?

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

7. Is it possible to reset the OBDII code P1591 in a Buick without repairs?

- While clearing the code may temporarily turn off the check engine light, it is crucial to address the underlying issue causing the fault code to prevent further problems.

8. Can a DIY enthusiast fix the OBDII code P1591 in a Buick?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the code themselves, but professional assistance is often recommended for complex issues.

9. Will the OBDII code P1591 in a Buick pass a state emissions test?

- No, a vehicle with an active OBDII fault code like P1591 is likely to fail an emissions test and may not meet the required standards for vehicle inspection.

10. How long does it take to repair the OBDII code P1591 in a Buick?

- The repair time can vary based on the exact cause of the code and the availability of parts, but it may take a few hours to a full day for diagnosis and repair.