P162B 2014 Chevrolet Silverado Code - Remote Vehicle Speed Limiting Signal Message Counter Incorrect
Quick Answer
When a remote slow-down request is sent from OnStar, the vehicle communication interface module sends a serial data message to the Engine Control Module (ECM) indicating that reduced vehicle speed has been requested. Common causes include Faulty Vehicle Communication Interface Module, Vehicle Communication Interface Module harness is open or shorted, Vehicle Communication Interface 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
- P162B 2014 Chevrolet Silverado indicates Remote Vehicle Speed Limiting Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Vehicle Communication Interface Module, Vehicle Communication Interface Module harness is open or shorted, Vehicle Communication Interface 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 P162B 2014 Chevrolet Silverado Description
The Diagnostic Trouble Code (DTC) will be set when the VIN embedded in the slow-down request does not match the VIN stored in the ECM or the rolling code counter embedded in the slow-down request does not increment for ten consecutive messages.
What are the Possible Causes of the DTC P162B 2014 Chevrolet Silverado?
- Faulty Vehicle Communication Interface Module
- Vehicle Communication Interface Module harness is open or shorted
- Vehicle Communication Interface Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P162B 2014 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 P162B 2014 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.
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Frequently Asked Questions about P162B 2014 Chevrolet Silverado Code
1. What does the OBDII code P162B mean on a 2014 Chevrolet Silverado?
P162B indicates that the Remote Vehicle Speed Limiting Signal Message Counter is incorrect, meaning there’s an issue with the data communication between the speed limiter system and the vehicle’s control modules.
2. What are the common symptoms of code P162B in a 2014 Chevrolet Silverado?
Symptoms may include a check engine light, speed limiter activation issues, reduced engine performance, or erratic speed limiting behavior.
3. What causes the P162B code to appear in a 2014 Chevrolet Silverado?
Common causes include faulty wiring or connections, a malfunctioning speed limiter control module, software issues in the ECM, or corrupted data communication.
4. Can a faulty speed limiter module trigger the P162B code?
Yes, a faulty or malfunctioning speed limiter control module can cause the P162B code by failing to send or receive the proper signal messages.
5. How can I diagnose the P162B code on my 2014 Chevrolet Silverado?
Use an OBDII scanner to confirm the code, inspect the wiring and connectors related to the speed limiter system, and check for software updates for the ECM or TCM.
6. Is the P162B code serious, and can I drive with it?
The P162B code may not immediately affect drivability but could result in reduced performance or speed limiter activation issues. It’s best to address the issue promptly to avoid further problems.
7. How do I fix the P162B code on my 2014 Chevrolet Silverado?
Repairs may involve checking and repairing wiring or connector issues, reprogramming or updating the ECM software, or replacing a faulty speed limiter control module.
8. Can a software update fix the P162B code?
Yes, if the issue is caused by outdated or corrupted ECM software, a software update may resolve the P162B code.
9. What tools are needed to troubleshoot the P162B code?
You’ll need an OBDII scanner, a multimeter for testing wiring, and potentially a GM-specific diagnostic tool for reprogramming or module testing.
10. Will clearing the P162B code with a scanner resolve the problem?
Clearing the code may temporarily remove the check engine light, but if the underlying issue isn’t fixed, the code will likely return.
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