AutoCodes – Chevrolet – P1591 2018 Chevrolet Silverado

P1591 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 236

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1591 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Body Control Module Engine Speed Request Signal Message Counter Incorrect - AutoCodes.com — P1591 2018 Chevrolet Silverado Code - Body Control Module Engine Speed Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P1591 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P1591 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1591 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1591 in a 2018 Chevrolet Silverado?

- Common symptoms include engine stalling, rough idling, poor acceleration, and potential issues with the vehicle's electrical systems.

2. What does the OBDII code P1591 "Body Control Module Engine Speed Request Signal Message Counter Incorrect" mean in a 2018 Chevrolet Silverado?

- This code indicates a problem with the communication between the body control module and the engine control module related to the engine speed request signal counter being incorrect.

3. What are the possible causes of OBDII code P1591 in a 2018 Chevrolet Silverado?

- Possible causes include a faulty body control module, issues with the engine control module, wiring problems, poor electrical connections, or a software malfunction.

4. How can I diagnose the OBDII code P1591 in my 2018 Chevrolet Silverado?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the code, checking the wiring and connectors for any visible damage, and potentially performing a communication system test.

5. Can OBDII code P1591 in a 2018 Chevrolet Silverado cause serious damage if ignored?

- Ignoring this code can lead to potential drivability issues and further electrical system malfunctions. It is recommended to address the underlying problem promptly.

6. Is it safe to drive my 2018 Chevrolet Silverado with OBDII code P1591 present?

- It is not recommended to drive the vehicle with this code present, as it can affect the engine performance and overall safety of the vehicle.

7. How can I repair OBDII code P1591 in my 2018 Chevrolet Silverado?

- Repair options may include replacing the body control module, addressing wiring issues, checking and reprogramming modules, and ensuring all connections are secure and functioning properly.

8. Can I reset the OBDII code P1591 in my 2018 Chevrolet Silverado by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is essential to diagnose and address the underlying issue to prevent the code from reoccurring.

9. Are there any common recalls or technical service bulletins related to OBDII code P1591 in a 2018 Chevrolet Silverado?

- Checking with a Chevrolet dealership or using online resources to search for any relevant recalls or technical service bulletins can provide valuable information on this specific OBDII code.

10. Should I attempt to repair OBDII code P1591 in my 2018 Chevrolet Silverado myself, or seek professional help?

- Due to the complexity of diagnosing and repairing communication system issues, it is recommended to seek professional help from a qualified mechanic or dealership specializing in Chevrolet vehicles.