AutoCodes – GMC – P2161 2016 GMC Sierra

P2161 2016 GMC Sierra Code - Vehicle Speed Sensor 2 Circuit Intermittent

Quick Answer

The Vehicle Speed Sensor (VSS) provides vehicle speed information to the Engine Control Module (ECM). Common causes include Faulty Vehicle Speed Sensor (VSS), Vehicle Speed Sensor harness is open or shorted, Vehicle Speed Sensor 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: P2161 2016 GMC Sierra indicates Vehicle Speed Sensor 2 Circuit Intermittent.
Common causes: Common causes include Faulty Vehicle Speed Sensor (VSS), Vehicle Speed Sensor harness is open or shorted, Vehicle Speed Sensor 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.

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Code Popularity 145

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 08, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2161 2016 GMC Sierra Description

The Vehicle Speed Sensor (VSS) provides vehicle speed information to the Engine Control Module (ECM). The VSS is a permanent magnet generator. The sensor is mounted in the transfer case facing the rear internal gear which is splined to the output shaft assembly. As the output shaft and internal gear rotate, the toothed rotor of the internal gear produces AC voltage as the rotor teeth pass through the magnetic field of the sensor. The AC voltage level and the number of pulses increase as the speed of the vehicle increases. The ECM converts the voltage to vehicle speed. The ECM uses the output shaft speed signal to determine shift timing, as well as transfer case range. The Diagnostic Trouble Code (DTC) will be set when there is a loss of speed signal from the transfer case speed sensor.

OBDII Code P2161 2016 GMC Sierra - Vehicle Speed Sensor 2 Circuit Intermittent - AutoCodes.com — P2161 2016 GMC Sierra Code - Vehicle Speed Sensor 2 Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P2161 2016 GMC Sierra?

Faulty Vehicle Speed Sensor (VSS)
Vehicle Speed Sensor harness is open or shorted
Vehicle Speed Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2161 2016 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 P2161 2016 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 P2161 2016 GMC Sierra code?

Need more information on how to fix the P2161 2016 GMC Sierra code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2161 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P2161 in a 2016 GMC Sierra?

The common symptoms of code P2161 (Vehicle Speed Sensor 2 Circuit Intermittent) in a 2016 GMC Sierra may include issues with the speedometer, erratic speed readings, and potential transmission shifting problems.

2. What can cause the OBDII code P2161 to appear in a 2016 GMC Sierra?

The OBDII code P2161 in a 2016 GMC Sierra is typically triggered by issues such as a faulty vehicle speed sensor, damaged wiring or connectors related to the sensor, or a malfunctioning speedometer.

3. How can I diagnose the Vehicle Speed Sensor 2 Circuit Intermittent issue in my 2016 GMC Sierra?

To diagnose the Vehicle Speed Sensor 2 Circuit Intermittent problem in your 2016 GMC Sierra, you may need to perform a thorough inspection of the vehicle speed sensor, check the wiring for any damage, and use a diagnostic scanner to retrieve the trouble codes.

4. Is it safe to continue driving my 2016 GMC Sierra with the P2161 fault code?

It's not recommended to ignore the OBDII code P2161 in a 2016 GMC Sierra, as it can lead to inaccurate speed readings and potential transmission issues. It's best to address the problem promptly to avoid any further complications.

5. What are some possible repair tips for fixing the Vehicle Speed Sensor 2 Circuit Intermittent problem in a 2016 GMC Sierra?

Repair tips for resolving the OBDII code P2161 in a 2016 GMC Sierra may include checking and replacing the vehicle speed sensor, repairing any damaged wiring or connectors, and clearing the trouble codes to see if the issue persists.

6. Can a DIY enthusiast fix the Vehicle Speed Sensor 2 Circuit Intermittent issue in a 2016 GMC Sierra?

While some DIY enthusiasts may be able to address the OBDII code P2161 in a 2016 GMC Sierra by replacing the vehicle speed sensor or repairing wiring issues, it's recommended to have the proper tools and knowledge to ensure a successful repair.

7. How much does it typically cost to repair the OBDII code P2161 in a 2016 GMC Sierra at a repair shop?

The cost of repairing the Vehicle Speed Sensor 2 Circuit Intermittent problem in a 2016 GMC Sierra at a repair shop can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor.

8. What are the long-term implications of ignoring the OBDII code P2161 in a 2016 GMC Sierra?

Ignoring the OBDII code P2161 in a 2016 GMC Sierra can lead to ongoing speedometer inaccuracies, potential transmission issues, and even trigger additional warning lights on the dashboard. It's best to address the problem promptly.

9. Can extreme weather conditions affect the Vehicle Speed Sensor 2 Circuit Intermittent problem in a 2016 GMC Sierra?

Extreme weather conditions such as excessive heat or cold can potentially impact the performance of the vehicle speed sensor and wiring, leading to intermittent issues like the OBDII code P2161 in a 2016 GMC Sierra.

10. Is it necessary to reset the vehicle's computer after repairing the OBDII code P2161 in a 2016 GMC Sierra?

After repairing the Vehicle Speed Sensor 2 Circuit Intermittent problem in a 2016 GMC Sierra, it's recommended to reset the vehicle's computer to clear any stored trouble codes and ensure proper functioning of the system.