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Engine-Codes – GMC – P2068 2016 GMC Sierra

P2068 2016 GMC Sierra Code - Fuel Level Sensor 2 Circuit High Voltage

Quick Answer

The P2068 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Fuel Level Sensor 2 Circuit High Voltage. Common causes include Faulty fuel level sensor, Wiring or connector issues, Corrosion or damage to sensor components. 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
P2068 2016 GMC Sierra indicates Fuel Level Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty fuel level sensor, Wiring or connector issues, Corrosion or damage to sensor components.
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 14, 2024
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Code P2068 2016 GMC Sierra Description

The P2068 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Fuel Level Sensor 2 Circuit High Voltage. This code is specifically related to the fuel level sensor in the vehicle's fuel tank. The fuel level sensor is responsible for measuring the amount of fuel in the tank and sending this information to the vehicle's engine control module (ECM). The ECM uses this data to calculate fuel consumption, optimize fuel delivery, and display the fuel level on the dashboard.

OBDII Code P2068 2016 GMC Sierra - Fuel Level Sensor 2 Circuit High Voltage
P2068 2016 GMC Sierra Code - Fuel Level Sensor 2 Circuit High Voltage

Common Causes of P2068 2016 GMC Sierra

  1. Faulty fuel level sensor
  2. Wiring or connector issues
  3. Corrosion or damage to sensor components
  4. ECM software malfunction
  5. Electrical system issues

Symptoms of P2068 2016 GMC Sierra

  1. Inaccurate fuel gauge readings
  2. Check Engine Light illuminated
  3. Engine stalling or hesitation
  4. Difficulty starting the vehicle
  5. Poor fuel economy

How to Fix P2068 2016 GMC Sierra

  1. Diagnose the issue by using a scan tool to read the DTC and inspect the fuel level sensor and related components.
  2. Test the fuel level sensor's resistance and voltage to determine if it is functioning correctly.
  3. Check the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  4. If the fuel level sensor is faulty, replace it with a new sensor that meets OEM specifications.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2068 2016 GMC Sierra

The cost of repairing a Fuel Level Sensor 2 Circuit High Voltage issue in a 2016 GMC Sierra can vary depending on the specific cause of the problem and the cost of parts and labor in your area. On average, the cost of replacing a fuel level sensor can range from $150 to $300, with additional costs for diagnostic testing, wiring repairs, or other necessary components. Labor costs at auto repair shops typically range from $80 to $150 per hour, but rates may vary based on location and shop type. It's recommended to obtain a detailed quote from a trusted mechanic to get an accurate estimate for your specific situation.

What does this mean?

Tech Notes for P2068 2016 GMC Sierra

A low fuel level can trigger this code. Before replacing any parts, try filling up the fuel tank and erasing the engine code. If the problem persists, it may be necessary to replace the fuel level sensor.

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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 P2068 2016 GMC Sierra Code

1. What does OBDII code P2068 mean for my 2016 GMC Sierra?

- OBDII code P2068 on a 2016 GMC Sierra indicates an issue with the Fuel Level Sensor 2 Circuit registering high voltage.

2. What are the common symptoms of OBDII code P2068 on a 2016 GMC Sierra?

- Common symptoms of code P2068 include inaccurate fuel level readings on the gauge, fluctuating fuel level readings, and possibly an illuminated check engine light.

3. What are the potential causes of OBDII code P2068 on a 2016 GMC Sierra?

- The code P2068 on a 2016 GMC Sierra can be triggered by issues such as a faulty fuel level sensor, damaged wiring or connectors in the sensor circuit, or a problem with the vehicle's powertrain control module (PCM).

4. How do I diagnose the Fuel Level Sensor 2 Circuit high voltage issue on my 2016 GMC Sierra?

- Diagnosing the P2068 code typically involves inspecting the fuel level sensor and its wiring for any visible damage, checking the sensor's resistance values, and testing the sensor's voltage output.

5. Can I still drive my 2016 GMC Sierra with OBDII code P2068?

- While it may be possible to drive your GMC Sierra with the P2068 code, it's recommended to address the issue promptly to prevent inaccurate fuel level readings and potential further damage to the sensor or related components.

6. How can I repair OBDII code P2068 on my 2016 GMC Sierra?

- Repairing code P2068 often involves replacing the faulty fuel level sensor, repairing any damaged wiring or connectors, and clearing the code with a diagnostic scan tool.

7. Is it necessary to reset the OBDII code P2068 after repairing the issue on my 2016 GMC Sierra?

- Yes, it's important to clear the P2068 code using a diagnostic scan tool after repairing the Fuel Level Sensor 2 Circuit high voltage problem on your 2016 GMC Sierra.

8. Can a DIY enthusiast fix OBDII code P2068 on a 2016 GMC Sierra?

- While some aspects of diagnosing and repairing the P2068 code may be within reach of a DIY enthusiast, it's recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is fully resolved.

9. How long does it usually take to repair OBDII code P2068 on a 2016 GMC Sierra?

- The time required to repair the P2068 code on a 2016 GMC Sierra can vary depending on the exact cause of the issue, but it typically ranges from 1 to 3 hours in a professional repair setting.

10. What happens if I ignore OBDII code P2068 on my 2016 GMC Sierra?

- Ignoring the P2068 code on your 2016 GMC Sierra can lead to inaccurate fuel level readings, potential fuel-related issues, and may cause further damage to the fuel level sensor or related components over time.

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