AutoCodes – GMC – P2161 2014 GMC Sierra

P2161 2014 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 2014 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 294

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 2014 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 2014 GMC Sierra - Vehicle Speed Sensor 2 Circuit Intermittent - AutoCodes.com — P2161 2014 GMC Sierra Code - Vehicle Speed Sensor 2 Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P2161 2014 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 2014 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 2014 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 2014 GMC Sierra code?

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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 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P2161 in a 2014 GMC Sierra?

- Common symptoms include erratic speedometer readings, issues with cruise control functionality, and the illumination of the Check Engine Light.

2. What does the OBDII code P2161 indicate for a 2014 GMC Sierra?

- OBDII code P2161 specifically refers to a Vehicle Speed Sensor 2 Circuit Intermittent issue in the 2014 GMC Sierra.

3. What are the potential causes of OBDII code P2161 in a 2014 GMC Sierra?

- Possible causes include a faulty vehicle speed sensor, damaged or corroded wiring/connectors related to the sensor, or issues with the vehicle's ECM.

4. How can I diagnose the cause of OBDII code P2161 in my 2014 GMC Sierra?

- Diagnosis typically involves inspecting the vehicle speed sensor and its wiring for any visible damage, as well as using a multimeter to test for proper voltage and continuity.

5. Can I continue driving my 2014 GMC Sierra with OBDII code P2161?

- It is generally not recommended to continue driving with this code present, as it may lead to inaccurate speed readings and potential safety hazards.

6. How can I repair OBDII code P2161 in my 2014 GMC Sierra?

- Repair usually involves replacing the faulty vehicle speed sensor, repairing any damaged wiring or connectors, and clearing the error code with an OBDII scanner.

7. Is it possible to reset OBDII code P2161 in a 2014 GMC Sierra without fixing the issue?

- While you can clear the code temporarily with an OBDII scanner, the underlying problem causing the code will likely persist and trigger the Check Engine Light again.

8. Are there any DIY tips for addressing OBDII code P2161 in a 2014 GMC Sierra?

- DIY enthusiasts can attempt to visually inspect the vehicle speed sensor and its connections for any obvious issues before considering professional repairs.

9. Will fixing OBDII code P2161 in my 2014 GMC Sierra improve fuel efficiency?

- Resolving the code may help restore proper speedometer functionality, which can indirectly contribute to optimal driving conditions and potentially improve fuel efficiency.

10. How much does it typically cost to repair OBDII code P2161 in a 2014 GMC Sierra at a mechanic or dealership?

- Repair costs can vary depending on the exact cause of the issue, but expect to budget for sensor replacement and labor, which may range from $100 to $300 or more.