P1591 2017 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 2017 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.
Code P1591 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1591 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P1591 2017 Chevrolet Silverado Code
1. What does the OBDII code P1591 mean on a 2017 Chevrolet Silverado?
The P1591 code indicates that the Body Control Module (BCM) has detected an issue with the engine speed request signal message counter, which may be incorrect or out of sequence.
2. What are the common symptoms of code P1591?
Symptoms may include the Check Engine Light or Service Stabilitrak warning, erratic throttle response, reduced engine power, or communication errors between vehicle modules.
3. What causes the P1591 code to appear?
Common causes include a faulty Body Control Module (BCM), issues with the Engine Control Module (ECM), wiring or connector problems in the communication circuit, or software glitches.
4. Can code P1591 cause drivability issues?
Yes, it can cause drivability problems such as reduced engine power, throttle irregularities, or activation of limp mode.
5. How is the P1591 code diagnosed?
A technician will use a scan tool to check for additional codes, inspect the BCM and ECM for proper communication, test wiring and connectors, and verify the integrity of the signal message counter.
6. Can a software update fix the P1591 code?
In some cases, reprogramming or updating the software for the BCM or ECM may resolve the issue if it is caused by a system glitch.
7. Is it safe to drive with the P1591 code?
Driving with this code may not be safe, as it can lead to reduced engine power or erratic vehicle behavior. It’s best to have the issue inspected and repaired promptly.
8. What repairs can fix the P1591 code?
Repairs may include replacing the BCM or ECM, repairing or replacing damaged wiring or connectors, and performing module reprogramming if required.
9. How much does it cost to repair the P1591 code?
Repair costs vary depending on the root cause, but BCM or ECM replacements can range from $300 to $1,000, including parts and labor.
10. Can I reset the P1591 code myself?
While you can clear the code with an OBDII scanner, it’s important to address the underlying issue to prevent the code from returning and ensure proper vehicle operation.
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