P2068 Chevrolet Code - Fuel Level Sensor 2 Circuit High Voltage
Quick Answer
Diesel Engine The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level 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
- P2068 Chevrolet indicates Fuel Level Sensor 2 Circuit High Voltage.
- Common causes
- Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level 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.
Code P2068 Chevrolet Description
The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. The Fuel Pump Driver Control Module monitors the signal circuits of the primary fuel level sensor and the secondary fuel level sensor and sends the signal information to the Engine Control Module (ECM) for all further handling. The ECM uses this value in order to determine the fuel level. When the fuel tank is full, the resistances of both fuel level sensors are low, and the ECM senses a low signal voltage on both the signal circuits of the primary fuel level sensor and the secondary fuel level sensor. When the fuel tank is empty, the resistances of the fuel level sensors are high, and the ECM senses a high signal voltage. The ECM uses the signal circuits of the primary fuel level sensor and the secondary fuel level sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via the serial data circuit to the instrument cluster in order to control the fuel gauge.
Gasoline Engine
The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. The Engine Control Module (ECM) monitors the signal circuits of the primary fuel level sensor and the secondary fuel level sensor in order to determine the fuel level. When the fuel tank is full, the resistances of both fuel level sensors are low, and the ECM senses a low signal voltage on both the signal circuits of the primary fuel level sensor and the secondary fuel level sensor. When the fuel tank is empty, the resistances of the fuel level sensors are high, and the ECM senses a high signal voltage. The ECM uses the signal circuits of the primary fuel level sensor and the secondary fuel level sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via the serial data circuit to the instrument cluster in order to control the fuel gauge.
The Diagnostic Trouble Code (DTC) will be set if the ECM detects the signal voltage is greater than 4.7 V.
What are the Possible Causes of the DTC P2068 Chevrolet?
- Faulty Fuel Level Sensor
- Fuel Level Sensor harness is open or shorted
- Fuel Level Sensor circuit poor electrical connection
- Faulty Instrument Cluster
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2068 Chevrolet?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2068 Chevrolet 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.
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Information for Specific Chevrolet Models
- P2068 2014 Chevrolet Silverado — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2015 Chevrolet Silverado — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2016 Chevrolet Silverado — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2017 Chevrolet Silverado — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2018 Chevrolet Silverado — Fuel Level Sensor 2 Circuit High Voltage
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
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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.
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Let me check if I can find more information. What model and year is your vehicle? do you have any more codes?
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