P162B 2017 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 2017 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 2017 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 2017 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 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 P162B 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.
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Frequently Asked Questions about P162B 2017 Chevrolet Silverado Code
1. What does the OBDII code P162B mean on a 2017 Chevrolet Silverado?
P162B indicates a problem with the Remote Vehicle Speed Limiting Signal Message Counter, suggesting a communication error between control modules related to speed limitation.
2. What are common symptoms of the P162B code in a Chevrolet Silverado?
Symptoms may include no noticeable performance issues, a check engine light, or problems with remote speed-limiting features if equipped.
3. What causes the P162B code in a 2017 Chevrolet Silverado?
Possible causes include faulty communication between the modules, a software glitch, wiring issues, or a malfunction in the speed-limiting system.
4. Can the P162B code cause drivability issues?
In most cases, the P162B code does not directly cause drivability issues, but it may indicate underlying communication problems that could lead to future concerns.
5. How is the P162B code diagnosed?
A technician will use a scan tool to check for related codes, inspect wiring and connections between modules, and verify the operation of the speed-limiting system.
6. Can I drive my Silverado with a P162B code?
Yes, you can typically drive with this code, as it rarely affects drivability, but it’s best to address it to ensure proper module communication.
7. How can the P162B code be fixed?
Repairs may include updating or reprogramming the control module software, repairing or replacing damaged wiring, or addressing faults in the speed-limiting system.
8. Is the P162B code related to the speed sensor?
Not directly. This code refers to communication issues with the speed-limiting signal rather than the speed sensor itself.
9. Will clearing the P162B code fix the issue?
Clearing the code may temporarily remove the check engine light, but if the underlying issue isn’t fixed, the code will return.
10. Is the P162B code common in 2017 Chevrolet Silverados?
This code is relatively uncommon and typically arises in vehicles with specific remote speed-limiting features or communication module issues.
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