Engine-CodesChevrolet – P2068 Chevrolet

P2068 Chevrolet Code - Fuel Level Sensor 2 Circuit High Voltage

Quick Answer

The P2068 Chevrolet OBD-II diagnostic trouble code indicates that there is a problem with the fuel level sensor 2 circuit, specifically that the voltage is reading higher than normal. Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's operation. 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 Chevrolet indicates Fuel Level Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's operation.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2068 Chevrolet Description

The P2068 Chevrolet OBD-II diagnostic trouble code indicates that there is a problem with the fuel level sensor 2 circuit, specifically that the voltage is reading higher than normal. The fuel level sensor is responsible for sending data to the vehicle's fuel gauge, informing the driver of the amount of fuel in the tank. When the sensor circuit detects a high voltage, it may lead to inaccurate fuel level readings on the dashboard, potentially causing the fuel gauge to fluctuate or show incorrect levels.

OBDII Code P2068 Chevrolet - Fuel Level Sensor 2 Circuit High Voltage
P2068 Chevrolet Code - Fuel Level Sensor 2 Circuit High Voltage

Common Causes of P2068 Chevrolet

  1. Faulty fuel level sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or debris affecting the sensor's operation.
  4. Issues with the vehicle's ECM interpreting sensor data.
  5. Electrical problems within the sensor circuit.

Symptoms of P2068 Chevrolet

  1. Inaccurate fuel level readings on the dashboard.
  2. Fluctuating fuel gauge readings.
  3. Vehicle running out of fuel unexpectedly.
  4. Check Engine Light illuminated.
  5. Poor fuel economy.

How to Fix P2068 Chevrolet

  1. Diagnose the issue by using a scan tool to read the OBD-II trouble codes and determine the high voltage reading from the fuel level sensor 2 circuit.
  2. Inspect the wiring and connectors for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the fuel level sensor for proper operation and resistance values. Replace the sensor if it is faulty.
  4. Clear the trouble codes from the ECM and reset the system to ensure the issue has been resolved.
  5. Perform a road test to verify that the fuel level readings are accurate and the issue has been successfully addressed.

Cost to Fix P2068 Chevrolet

The typical repair costs for addressing a P2068 Chevrolet trouble code can vary depending on the specific cause of the issue and the parts and labor required for the repair. In general, the cost of replacing a faulty fuel level sensor can range from $100 to $300, while addressing wiring or connector issues may require additional labor and parts costs. Overall, the total repair cost for this issue could range from $150 to $500, including parts and labor.

Tech Notes for P2068 Chevrolet

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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Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code P2068 in a Chevrolet related to the Fuel Level Sensor 2 Circuit High Voltage?

The common symptoms include inaccurate fuel gauge readings, fluctuating fuel gauge readings, illumination of the check engine light, and potential issues with fuel consumption monitoring.

2. What are the possible causes of OBDII code P2068 in a Chevrolet indicating Fuel Level Sensor 2 Circuit High Voltage?

Possible causes may include a faulty fuel level sensor, damaged wiring or connectors in the fuel level sensor circuit, a malfunctioning fuel pump module, or issues with the vehicle's powertrain control module.

3. How can I diagnose the OBDII code P2068 related to the Fuel Level Sensor 2 Circuit High Voltage in my Chevrolet?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the fuel level sensor and its connections, testing the fuel pump module, and checking the wiring for any signs of damage or corrosion.

4. Can I continue driving my Chevrolet with OBDII code P2068 related to the Fuel Level Sensor 2 Circuit High Voltage?

It is not recommended to continue driving the vehicle with this code as it can lead to inaccurate fuel level readings, potentially causing you to run out of fuel unexpectedly. It is best to address the issue promptly.

5. How can I repair OBDII code P2068 indicating Fuel Level Sensor 2 Circuit High Voltage in my Chevrolet?

Repair methods may involve replacing the faulty fuel level sensor, repairing or replacing damaged wiring or connectors, replacing the fuel pump module if necessary, and clearing the fault code from the vehicle's computer.

6. Will clearing the OBDII code P2068 related to the Fuel Level Sensor 2 Circuit High Voltage fix the issue in my Chevrolet?

Simply clearing the fault code may not fix the underlying problem causing the code to be triggered. It is essential to diagnose the root cause of the issue and perform the necessary repairs to prevent the code from reoccurring.

7. Can a DIY enthusiast fix OBDII code P2068 in a Chevrolet themselves?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this issue themselves by following repair guides or manuals specific to their Chevrolet model. However, if unsure, it is recommended to seek professional assistance.

8. Is OBDII code P2068 related to the Fuel Level Sensor 2 Circuit High Voltage a common issue in Chevrolet vehicles?

While not extremely common, issues with the fuel level sensor circuit leading to code P2068 can occur in Chevrolet vehicles, especially in older models or vehicles with high mileage.

9. Will a faulty fuel level sensor impact the overall performance of my Chevrolet if I ignore OBDII code P2068?

While a faulty fuel level sensor may not directly impact the performance of the vehicle, it can cause inconvenience and potentially lead to running out of fuel unexpectedly. It is best to address the issue to maintain accurate fuel level readings.

10. How much can I expect to pay for repairing OBDII code P2068 related to the Fuel Level Sensor 2 Circuit High Voltage in my Chevrolet?

The cost of repairs can vary depending on the specific cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take your Chevrolet to a professional mechanic. Costs may include parts and labor.

Discuss the causes and fixes for P2068 Chevrolet OBDII Code

  • Replace bad sending unit in rear tank the actual relay that controls the fuel from each tank is inside the frame between the tanks... Have to keep resetting code to get gas gauge to work for a short time.

  • Let me check if I can find more information. What model and year is your vehicle? do you have any more codes?