P2068 GMC Code - Fuel Level Sensor 2 Circuit High Voltage
Quick Answer
The P2068 GMC code indicates a problem with the Fuel Level Sensor 2 Circuit in your vehicle. Common causes include Faulty fuel level sensor, Damaged wiring or connectors in the sensor circuit, Corrosion on sensor 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
- P2068 GMC 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 on sensor 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.
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Code P2068 GMC Description
The P2068 GMC code indicates a problem with the Fuel Level Sensor 2 Circuit in your vehicle. This sensor is responsible for measuring the amount of fuel in the tank and sending this information to the vehicle's computer system. When the sensor detects a high voltage in the circuit, it means that there is an issue with the fuel level readings being sent.
Common Causes of P2068 GMC
- Faulty fuel level sensor
- Damaged wiring or connectors in the sensor circuit
- Corrosion on sensor connections
- Issues with the vehicle's computer system
- Fuel system contamination
Symptoms of P2068 GMC
- Inaccurate fuel gauge readings
- Check Engine Light illuminated
- Engine stalling or misfiring
- Poor fuel efficiency
- Difficulty starting the vehicle
How to Fix P2068 GMC
- Begin by diagnosing the specific cause of the high voltage in the Fuel Level Sensor 2 Circuit using a diagnostic scanner.
- Inspect the fuel level sensor for any signs of damage or wear and replace it if necessary.
- Check the wiring and connectors in the sensor circuit for any damage or corrosion and repair or replace as needed.
- Clear the diagnostic trouble codes from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnosis may be required to determine any underlying issues with the vehicle's computer system.
Cost to Fix P2068 GMC
The cost of repairing a Fuel Level Sensor 2 Circuit High Voltage issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the cost of replacing a fuel level sensor can range from $100 to $300, including parts and labor. However, additional costs may apply if wiring or connectors need to be replaced or if further diagnosis is required. It's essential to consult with a qualified mechanic to get an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary between auto repair shops, so it's advisable to shop around for the best price.
Tech Notes for P2068 GMC
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Information for Specific GMC Models
- P2068 2014 GMC Sierra — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2015 GMC Sierra — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2016 GMC Sierra — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2017 GMC Sierra — Fuel Level Sensor 2 Circuit High Voltage
- P2068 2018 GMC Sierra — Fuel Level Sensor 2 Circuit High Voltage
Frequently Asked Questions about P2068 GMC Code
1. What does the OBDII code P2068 mean on a GMC?
P2068 indicates that the fuel level sensor 2 circuit is reporting a voltage higher than the expected range, typically pointing to an issue with the fuel level sensor or its wiring.
2. What are the common symptoms of code P2068 in a GMC vehicle?
Symptoms may include an inaccurate fuel gauge reading, an illuminated check engine light, and, in some cases, erratic changes in the fuel level display.
3. What causes the P2068 code to appear on a GMC?
Common causes include a faulty fuel level sensor, damaged or corroded wiring or connectors, a malfunctioning fuel pump module, or issues in the vehicle's PCM (powertrain control module).
4. Can I drive my GMC with the P2068 code active?
While the vehicle may still be drivable, ignoring the P2068 code can lead to inaccurate fuel level readings, increasing the risk of running out of fuel unexpectedly.
5. How do I diagnose the P2068 code on a GMC?
Start by using a scan tool to confirm the code, inspect the wiring and connectors for damage or corrosion, and test the fuel level sensor for proper resistance values.
6. What tools are needed to troubleshoot the P2068 code?
You’ll typically need an OBDII scanner, a multimeter for checking voltage and resistance, and basic tools to access the fuel pump module if necessary.
7. How do I fix the P2068 error code on my GMC?
Repairs may include replacing the fuel level sensor, repairing damaged wiring or connectors, cleaning corroded terminals, or replacing the fuel pump module if it's integrated with the sensor.
8. How much does it cost to repair code P2068 on a GMC?
Repair costs can vary widely, from $100–$300 for simple wiring repairs to $500–$1,000 or more if the fuel pump module requires replacement.
9. Is the P2068 code specific to GMC vehicles?
No, P2068 can appear on other makes and models, but the diagnostic and repair process may vary slightly depending on the vehicle.
10. Will clearing the P2068 code fix the problem on my GMC?
Clearing the code will turn off the check engine light temporarily, but if the underlying issue isn’t resolved, the code will likely return.
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