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P2160 2018 GMC Sierra Code - Vehicle Speed Sensor 2 Circuit Low Voltage

Quick Answer

The P2160 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Vehicle Speed Sensor 2 Circuit, specifically a low voltage issue. Common causes include Faulty Vehicle Speed Sensor, Damaged wiring or connectors in the VSS circuit, Corrosion or poor electrical connections. 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
P2160 2018 GMC Sierra indicates Vehicle Speed Sensor 2 Circuit Low Voltage.
Common causes
Common causes include Faulty Vehicle Speed Sensor, Damaged wiring or connectors in the VSS circuit, Corrosion or poor electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P2160 2018 GMC Sierra Description

The P2160 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Vehicle Speed Sensor 2 Circuit, specifically a low voltage issue. The Vehicle Speed Sensor (VSS) is a crucial component that monitors the speed of the vehicle and sends this information to the engine control module (ECM) for various functions such as fuel injection, transmission shifting, and ABS operation. When the VSS 2 Circuit detects a low voltage, it means that the signal being sent by the sensor is weaker than expected, which can lead to inaccurate speed readings and affect the vehicle's performance.

OBDII Code P2160 2018 GMC Sierra - Vehicle Speed Sensor 2 Circuit Low Voltage
P2160 2018 GMC Sierra Code - Vehicle Speed Sensor 2 Circuit Low Voltage

Common Causes of P2160 2018 GMC Sierra

  1. Faulty Vehicle Speed Sensor
  2. Damaged wiring or connectors in the VSS circuit
  3. Corrosion or poor electrical connections
  4. Malfunctioning Engine Control Module (ECM)
  5. Physical damage to the VSS due to road debris or impact

Symptoms of P2160 2018 GMC Sierra

  1. Inaccurate speedometer readings
  2. Harsh or delayed shifting in the transmission
  3. ABS warning light illuminated on the dashboard
  4. Loss of power or acceleration
  5. Engine stalling or misfiring

How to Fix P2160 2018 GMC Sierra

  1. Begin by diagnosing the VSS circuit using a multimeter to check for voltage output.
  2. Inspect the VSS, wiring, and connectors for any visible damage or corrosion.
  3. Replace the Vehicle Speed Sensor if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the VSS circuit.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2160 2018 GMC Sierra

The typical repair costs for addressing a Vehicle Speed Sensor 2 Circuit Low Voltage issue can range from $150 to $300, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It is advisable to check local rates for a more precise estimate before proceeding with the repair.

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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 P2160 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P2160 in a 2018 GMC Sierra?

- Common symptoms include erratic speedometer readings, fluctuating or non-functional cruise control, and the illumination of the check engine light.

2. What does the "Vehicle Speed Sensor 2 Circuit Low Voltage" mean in relation to the P2160 OBDII code?

- This code indicates that the vehicle's onboard computer has detected a low voltage signal from the second vehicle speed sensor circuit.

3. What are the possible causes of the P2160 code on a 2018 GMC Sierra?

- Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors in the speed sensor circuit, or issues with the vehicle's powertrain control module (PCM).

4. How can I diagnose the issue causing the P2160 code in my GMC Sierra?

- Diagnosing the problem involves conducting a thorough inspection of the vehicle speed sensor, checking the wiring for damage, and using a diagnostic scan tool to analyze the PCM data.

5. Can I continue driving my GMC Sierra with the P2160 code present?

- It is generally not recommended to drive the vehicle with the P2160 code active, as it can lead to inaccurate speed readings and potential issues with other vehicle systems.

6. How can I repair the "Vehicle Speed Sensor 2 Circuit Low Voltage" issue in my 2018 GMC Sierra?

- Repair options include replacing the faulty vehicle speed sensor, repairing damaged wiring or connectors, and resetting the PCM to clear the code.

7. Is it possible to reset the P2160 code in a GMC Sierra without fixing the underlying issue?

- While clearing the code temporarily with a diagnostic tool is possible, the underlying problem causing the code will need to be addressed to prevent it from reoccurring.

8. Can extreme weather conditions affect the occurrence of the P2160 code in a GMC Sierra?

- Yes, extreme temperatures or moisture can potentially impact the performance of the vehicle speed sensor and lead to the triggering of the P2160 code.

9. How much does it typically cost to repair the P2160 code in a 2018 GMC Sierra?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Will a P2160 code on a 2018 GMC Sierra affect the vehicle's overall performance?

- While the vehicle may still be operable with the P2160 code present, it is advisable to address the issue promptly to prevent potential complications and ensure optimal performance.

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