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P1591 2016 Chevrolet Silverado Code - Body Control Module Engine Speed Request Signal Message Counter Incorrect

Quick Answer

The P1591 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Body Control Module (BCM) has detected an incorrect engine speed request signal message counter. Common causes include Faulty wiring or connectors in the engine speed request signal circuit, Malfunctioning Body Control Module (BCM), Communication error between the BCM and other control modules. 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 2016 Chevrolet Silverado indicates Body Control Module Engine Speed Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty wiring or connectors in the engine speed request signal circuit, Malfunctioning Body Control Module (BCM), Communication error between the BCM and other control modules.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P1591 2016 Chevrolet Silverado Description

The P1591 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Body Control Module (BCM) has detected an incorrect engine speed request signal message counter. The BCM plays a crucial role in managing various functions within the vehicle, including communication with other control modules. In this case, the BCM is receiving an engine speed request signal with an incorrect message counter, which can lead to performance issues and potentially affect the vehicle's overall operation.

OBDII Code P1591 2016 Chevrolet Silverado - Body Control Module Engine Speed Request Signal Message Counter Incorrect
P1591 2016 Chevrolet Silverado Code - Body Control Module Engine Speed Request Signal Message Counter Incorrect

Common Causes of P1591 2016 Chevrolet Silverado

  1. Faulty wiring or connectors in the engine speed request signal circuit
  2. Malfunctioning Body Control Module (BCM)
  3. Communication error between the BCM and other control modules
  4. Software glitch or programming issue within the vehicle's system
  5. Electrical interference or signal disruption from external sources

Symptoms of P1591 2016 Chevrolet Silverado

  1. Engine misfires or hesitation during acceleration
  2. Rough idling or stalling
  3. Decreased fuel efficiency
  4. Dashboard warning light illuminated
  5. Limited or erratic functionality of certain vehicle systems

How to Fix P1591 2016 Chevrolet Silverado

  1. Connect a diagnostic scan tool to the vehicle's onboard computer to retrieve the specific DTC and identify the source of the issue.
  2. Inspect the wiring and connectors in the engine speed request signal circuit for any signs of damage, corrosion, or loose connections.
  3. Verify the functionality of the Body Control Module (BCM) and ensure it is communicating properly with other control modules.
  4. Address any software glitches or programming issues within the vehicle's system by performing necessary updates or reprogramming.
  5. Clear the DTC from the system after completing the repair process and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1591 2016 Chevrolet Silverado

The typical repair costs for addressing a P1591 DTC on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the required repairs. In general, the cost of parts and labor for this type of repair may range from $200 to $500. However, it is essential to consider that diagnostic time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's specific needs. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often offer more competitive pricing.

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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 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1591 in a 2016 Chevrolet Silverado?

- Common symptoms include engine stalling, rough idling, poor acceleration, and illuminated warning lights on the dashboard.

2. What does the OBDII code P1591 on a 2016 Chevrolet Silverado indicate?

- This code signifies that the Body Control Module (BCM) has detected an incorrect engine speed request signal message counter.

3. What are the possible causes of OBDII code P1591 in a 2016 Chevrolet Silverado?

- Potential causes include a faulty Body Control Module, wiring issues, poor electrical connections, or a damaged engine speed sensor.

4. How can I diagnose the OBDII code P1591 in my 2016 Chevrolet Silverado?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific error codes, checking the BCM for any visible damage, and inspecting the wiring and connections related to the engine speed sensor.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P1591?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential performance issues and further damage to the vehicle if left unresolved.

6. How can I repair OBDII code P1591 in my 2016 Chevrolet Silverado?

- Repair options may include replacing the Body Control Module, repairing any damaged wiring or connections, or addressing issues with the engine speed sensor.

7. Is it possible to reset OBDII code P1591 in a 2016 Chevrolet Silverado without repairs?

- While clearing the error code may temporarily turn off the warning light, the underlying issue causing the code will persist unless properly diagnosed and repaired.

8. Are there any common troubleshooting tips for OBDII code P1591 in a 2016 Chevrolet Silverado?

- Checking and cleaning electrical connections, inspecting for visible damage, and ensuring proper sensor functionality are good initial troubleshooting steps.

9. How much does it typically cost to repair OBDII code P1591 in a 2016 Chevrolet Silverado?

- Repair costs can vary depending on the specific issue causing the code, but expenses may include parts replacement, labor costs, and diagnostic fees.

10. Can a DIY enthusiast fix OBDII code P1591 in a 2016 Chevrolet Silverado?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing this code may require specialized tools and expertise, so professional assistance is often recommended.

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