AutoCodes – Chevrolet – P1591 Chevrolet

P1591 Chevrolet 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 Chevrolet 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 749

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

What does this mean?

What are the Possible Causes of the DTC P1591 Chevrolet?

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 Chevrolet?

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 Chevrolet 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.

Need more information about the P1591 Chevrolet code?

Need more information on how to fix the P1591 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1591 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P1591 2014 Chevrolet Silverado — Body Control Module Engine Speed Request Signal Message Counter Incorrect
P1591 2015 Chevrolet Silverado — Body Control Module Engine Speed Request Signal Message Counter Incorrect
P1591 2016 Chevrolet Silverado — Body Control Module Engine Speed Request Signal Message Counter Incorrect
P1591 2017 Chevrolet Silverado — Body Control Module Engine Speed Request Signal Message Counter Incorrect
P1591 2018 Chevrolet Silverado — Body Control Module Engine Speed Request Signal Message Counter Incorrect

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 Chevrolet Code

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

The common symptoms include the engine stalling, rough idling, and potential failure to start.

2. What could be the possible causes of OBDII code P1591 in a Chevrolet?

Potential causes of this code may include issues with the body control module, a faulty engine control module, wiring issues, or a defective speed sensor.

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

Diagnosing this code typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the wiring and connectors related to the body control module and engine control module, as well as testing the speed sensor.

4. Can I continue driving my Chevrolet with OBDII code P1591 present?

It is not recommended to drive your vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions.

5. How can I repair OBDII code P1591 in my Chevrolet?

Repairing this code may involve resetting the engine control module, repairing or replacing faulty wiring or connectors, replacing the speed sensor, or reprogramming the body control module.

6. Is it possible to clear OBDII code P1591 in a Chevrolet without fixing the underlying issue?

While you can clear the code with a diagnostic scanner, it is crucial to address the root cause to prevent the code from reoccurring.

7. Will OBDII code P1591 cause my Chevrolet to fail an emissions test?

Yes, having this code present can cause your vehicle to fail an emissions test due to the potential impact on engine performance and emissions.

8. How much can I expect to pay to repair OBDII code P1591 in my Chevrolet?

The cost of repairing this code can vary depending on the specific issue, but it may range from a few hundred dollars to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P1591 in a Chevrolet?

While some aspects of diagnosing and repairing this code may be possible for DIY enthusiasts with the right tools and knowledge, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

10. How long does it typically take to repair OBDII code P1591 in a Chevrolet?

The repair time for this code can vary based on the cause and complexity of the issue, but it may take a few hours to a full day to diagnose and repair the problem.