P1591 Chevrolet Code - Body Control Module Engine Speed Request Signal Message Counter Incorrect
Quick Answer
The P1591 code for Chevrolet specifically indicates a problem with the Body Control Module (BCM) Engine Speed Request Signal Message Counter being incorrect. Common causes include Faulty wiring or connectors between the BCM and ECM, Malfunctioning Body Control Module, Software glitch in the BCM. 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 wiring or connectors between the BCM and ECM, Malfunctioning Body Control Module, Software glitch in the BCM.
- 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 P1591 Chevrolet Description
The P1591 code for Chevrolet specifically indicates a problem with the Body Control Module (BCM) Engine Speed Request Signal Message Counter being incorrect. The Body Control Module is a vital component in modern vehicles, responsible for controlling various functions such as interior and exterior lighting, power windows, and keyless entry systems. The Engine Speed Request Signal is a communication signal sent from the BCM to the Engine Control Module (ECM) to request a change in engine speed.
Common Causes of P1591 Chevrolet
- Faulty wiring or connectors between the BCM and ECM.
- Malfunctioning Body Control Module.
- Software glitch in the BCM.
- Electrical interference or poor grounding issues.
- Water intrusion or corrosion in BCM connectors.
Symptoms of P1591 Chevrolet
- Engine hesitation or lack of response to throttle input.
- Rough idling or irregular engine speed fluctuations.
- Stalling or difficulty starting the engine.
- Illumination of the Check Engine Light.
- Loss of power during acceleration.
How to Fix P1591 Chevrolet
- Use a diagnostic scan tool to retrieve the specific trouble code and perform a thorough inspection of the BCM and related components.
- Inspect wiring harnesses and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Check for any software updates or reprogramming procedures recommended by the manufacturer for the BCM.
- Test the communication between the BCM and ECM to ensure proper functionality and clear any stored fault codes.
- Clear the trouble code from the vehicle's memory and perform a road test to verify that the issue has been resolved.
Cost to Fix P1591 Chevrolet
The typical repair costs for addressing a P1591 code on a Chevrolet can vary depending on the specific cause of the issue and the labor rates in your area. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get quotes from multiple sources to ensure you're getting a fair price. Additionally, factors such as the vehicle's make and model, as well as the extent of the repair needed, can influence the final cost.
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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
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.
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