P162B Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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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Information for Specific Chevrolet Models
- P162B 2014 Chevrolet Silverado — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2015 Chevrolet Silverado — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2016 Chevrolet Silverado — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2017 Chevrolet Silverado — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2018 Chevrolet Silverado — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
Frequently Asked Questions about P162B Chevrolet Code
1. What are the common symptoms of OBDII code P162B in a Chevrolet vehicle?
The common symptoms include the Check Engine Light (CEL) illuminating on the dashboard, decreased engine performance, and potential speed limitation.
2. What can cause the OBDII code P162B to trigger in a Chevrolet?
This code is typically triggered when the remote vehicle speed limiting signal message counter is incorrect, indicating a communication issue between modules or a faulty component.
3. How serious is the OBDII code P162B in a Chevrolet?
While the vehicle may still be operable with this code present, it is important to address it promptly to prevent potential speed limitations and ensure optimal engine performance.
4. How can I diagnose the OBDII code P162B in my Chevrolet?
Diagnosing this code usually involves using an OBDII scanner to retrieve the code, checking for related codes, inspecting wiring and connectors, and potentially testing components like the speed control module.
5. Can I repair the OBDII code P162B in my Chevrolet myself?
Depending on your automotive repair skills, you may be able to address this code yourself by checking and repairing any damaged wiring, ensuring proper module communication, or replacing faulty components.
6. Is it safe to drive with the OBDII code P162B present in my Chevrolet?
While it may be safe to drive with this code initially, it is recommended to address the issue promptly to prevent potential speed limitations and ensure the vehicle operates properly.
7. Can a faulty speed sensor trigger the OBDII code P162B in a Chevrolet?
Yes, a faulty speed sensor or related components can potentially trigger this code by disrupting the communication between modules responsible for speed control.
8. How much does it typically cost to repair the OBDII code P162B in a Chevrolet at a mechanic?
The cost of repairing this code can vary depending on the exact cause, labor rates, and parts needed, but it may range from around $100 to $500 or more at a mechanic.
9. Will resetting the OBDII code P162B in my Chevrolet make it go away permanently?
Simply resetting the code may temporarily turn off the Check Engine Light, but if the underlying issue causing the code is not addressed, it is likely to reoccur.
10. Can the OBDII code P162B in a Chevrolet affect fuel efficiency?
Yes, if the code leads to speed limitations or engine performance issues, it can potentially affect fuel efficiency by impacting the vehicle's overall operation.
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