P162B GMC 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 GMC 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 GMC 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 GMC?
- 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 GMC?
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 GMC 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 GMC Models
- P162B 2014 GMC Sierra — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2015 GMC Sierra — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2016 GMC Sierra — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2017 GMC Sierra — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
- P162B 2018 GMC Sierra — Remote Vehicle Speed Limiting Signal Message Counter Incorrect
Frequently Asked Questions about P162B GMC Code
1. What are the common symptoms of OBDII code P162B GMC?
The common symptoms of OBDII code P162B GMC may include limited vehicle speed, reduced engine performance, and an illuminated check engine light.
2. What does the OBDII code P162B GMC mean?
OBDII code P162B GMC indicates that the Remote Vehicle Speed Limiting Signal Message Counter is incorrect, potentially leading to speed limitations in the vehicle.
3. What are some possible causes of OBDII code P162B GMC?
Possible causes of OBDII code P162B GMC include issues with the speed limiting system, faulty wiring or connections, a malfunctioning speed sensor, or a problem with the engine control module.
4. How can I diagnose OBDII code P162B GMC?
Diagnosing OBDII code P162B GMC typically involves using an OBDII scanner to retrieve the code, checking the vehicle's speed limiting system, inspecting wiring and connections, and testing the speed sensor and engine control module.
5. Is it safe to continue driving with OBDII code P162B GMC?
It is not recommended to continue driving with OBDII code P162B GMC, as it may lead to speed limitations and potential safety hazards. It is advisable to address the issue promptly.
6. Can I repair OBDII code P162B GMC myself?
Repairing OBDII code P162B GMC may require advanced automotive knowledge and diagnostic tools. It is recommended to consult a professional mechanic for proper diagnosis and repair.
7. How much does it typically cost to fix OBDII code P162B GMC?
The cost of fixing OBDII code P162B GMC can vary depending on the underlying cause of the issue, parts needed for repair, and labor costs. It is advisable to obtain estimates from local mechanics or dealerships.
8. Will resetting the check engine light resolve OBDII code P162B GMC?
Resetting the check engine light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing OBDII code P162B GMC. Proper diagnosis and repair are necessary to address the problem.
9. Can extreme weather conditions trigger OBDII code P162B GMC?
Extreme weather conditions such as extreme heat or cold may not directly trigger OBDII code P162B GMC. However, these conditions can sometimes exacerbate existing issues with the vehicle's speed limiting system or sensors.
10. How long does it typically take to repair OBDII code P162B GMC?
The time it takes to repair OBDII code P162B GMC can vary depending on the cause of the issue and the complexity of the repair. Some repairs may be completed in a few hours, while others may take longer due to diagnostic work or parts ordering.
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