P162B 2018 GMC Sierra 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 2018 GMC Sierra 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 2018 GMC Sierra 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 2018 GMC Sierra?
- 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 2018 GMC Sierra?
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 2018 GMC Sierra 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 P162B 2018 GMC Sierra code?
Need more information on how to fix the P162B 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P162B 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P162B 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code P162B in a 2018 GMC Sierra?
- Common symptoms include the vehicle going into a reduced power mode, a check engine light illuminated on the dashboard, and limited performance.
2. What does the OBDII code P162B indicate in a 2018 GMC Sierra?
- The code P162B indicates that the Remote Vehicle Speed Limiting Signal Message Counter is reporting an incorrect value.
3. What are the possible causes of OBDII code P162B in a 2018 GMC Sierra?
- Possible causes include issues with the remote vehicle speed limiting system, faulty sensors, wiring problems, or a malfunction in the electronic control module.
4. How can I diagnose the OBDII code P162B in my 2018 GMC Sierra?
- Diagnosing the code typically involves using an OBDII scanner to retrieve the specific fault codes, inspecting the wiring and connections related to the speed limiting system, and testing the sensors for proper functionality.
5. Is it safe to continue driving my 2018 GMC Sierra with OBDII code P162B?
- It is not recommended to drive the vehicle with this code present, as it may result in performance issues and potentially unsafe driving conditions.
6. Can I reset the OBDII code P162B in my 2018 GMC Sierra myself?
- While you can reset the code using an OBDII scanner, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.
7. What are some possible repair tips for addressing OBDII code P162B in a 2018 GMC Sierra?
- Repair tips may include checking and repairing any damaged wiring, replacing faulty sensors, ensuring proper connections, and performing a software update if necessary.
8. How much does it typically cost to repair OBDII code P162B in a 2018 GMC Sierra?
- Repair costs can vary depending on the specific underlying issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.
9. Can a DIY enthusiast fix OBDII code P162B in a 2018 GMC Sierra?
- While some aspects of diagnosing and repairing the issue may be feasible for a DIY enthusiast, complex electrical or software-related repairs may require professional expertise.
10. How long does it take to repair OBDII code P162B in a 2018 GMC Sierra?
- The repair time can vary based on the exact cause of the code, but it may take several hours to a full day to diagnose and address the issue effectively.
Discuss the causes and fixes for P162B 2018 GMC Sierra OBDII Code
Code P162B 2018 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
