P2068 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado?
- 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 2017 Chevrolet Silverado?
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 2017 Chevrolet Silverado 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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Frequently Asked Questions about P2068 2017 Chevrolet Silverado Code
1. What does the OBDII code P2068 mean on a 2017 Chevrolet Silverado?
P2068 indicates a high voltage issue in the Fuel Level Sensor 2 Circuit, meaning the fuel level sensor is reporting values outside the expected range.
2. What are the common symptoms of the P2068 code in a 2017 Chevy Silverado?
Symptoms include an inaccurate fuel gauge reading, the fuel warning light turning on, and potentially reduced fuel efficiency.
3. What causes the P2068 code on a 2017 Chevrolet Silverado?
The code can be caused by a faulty fuel level sensor, damaged wiring or connectors, a corroded fuel pump module, or issues with the vehicle's PCM (Powertrain Control Module).
4. How do I diagnose the P2068 code on my Silverado?
Start by inspecting the fuel level sensor wiring and connectors for damage or corrosion. Use a multimeter to test the sensor's voltage and resistance, and check for related trouble codes.
5. Can I drive my 2017 Chevy Silverado with the P2068 code?
While the truck may still be drivable, the inaccurate fuel gauge could lead to running out of fuel unexpectedly, which could cause additional problems.
6. How do I fix the P2068 code on a 2017 Chevrolet Silverado?
Repairs may include replacing the fuel level sensor, repairing damaged wiring or connectors, cleaning corroded connections, or reprogramming the PCM if necessary.
7. How much does it cost to repair the P2068 code on a Chevy Silverado?
Repair costs vary but typically range from $150 to $400, depending on whether the issue is with the sensor, wiring, or PCM.
8. Can a bad fuel pump cause the P2068 code?
Yes, a failing or corroded fuel pump module that houses the sensor can cause this code by sending incorrect voltage signals.
9. Is the P2068 code covered under warranty for a 2017 Silverado?
It depends on your warranty coverage and mileage, but fuel system components may be covered under the powertrain or emissions warranty.
10. What tools are needed to troubleshoot the P2068 code?
You’ll need an OBDII scanner, a multimeter, and basic tools to inspect and test the wiring, connectors, and fuel level sensor.
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