P0463 2015 Chevrolet Silverado Code - Fuel Level Sensor 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
- P0463 2015 Chevrolet Silverado indicates Fuel Level Sensor 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 P0463 2015 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 P0463 2015 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 P0463 2015 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 P0463 2015 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.
Need more information about the P0463 2015 Chevrolet Silverado code?
Need more information on how to fix the P0463 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0463 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0463 2015 Chevrolet Silverado Code
1. What does the OBDII code P0463 mean for a 2015 Chevrolet Silverado?
P0463 indicates a "Fuel Level Sensor Circuit High Voltage," meaning the fuel level sensor is reporting a voltage outside the expected range, often interpreted as an issue with the fuel gauge or sensor.
2. What are the common symptoms of code P0463 in a 2015 Chevrolet Silverado?
Symptoms include an inaccurate or fluctuating fuel gauge reading, a check engine light, and possibly erratic fuel level warnings.
3. What causes the P0463 code to appear in a 2015 Chevrolet Silverado?
Common causes include a faulty fuel level sensor, damaged wiring or connectors in the fuel level circuit, a failing fuel pump module, or even corrosion in the electrical connections.
4. Can a bad fuel level sensor cause drivability issues in my 2015 Chevrolet Silverado?
Generally, no. A faulty fuel level sensor primarily affects fuel gauge accuracy and does not directly impact engine performance or drivability.
5. How do I diagnose the P0463 code on a 2015 Chevrolet Silverado?
Start by inspecting the fuel level sensor wiring and connectors for damage or corrosion, then test the sensor's resistance and voltage to ensure it is within the manufacturer's specifications.
6. Can I still drive my 2015 Chevrolet Silverado with code P0463?
Yes, you can still drive the vehicle, but you may not know the accurate fuel level, which increases the risk of running out of fuel unexpectedly.
7. How much does it cost to fix code P0463 on a 2015 Chevrolet Silverado?
The cost varies but typically ranges from $200 to $600, depending on whether the fuel level sensor or fuel pump module needs replacement and labor costs in your area.
8. Does clearing the P0463 code fix the problem on a 2015 Chevrolet Silverado?
Clearing the code resets the check engine light but does not address the underlying issue. The code will likely return unless the problem is properly fixed.
9. Is replacing the fuel level sensor the only solution for code P0463 on a 2015 Chevrolet Silverado?
Not always. The issue could also stem from damaged wiring, a corroded connector, or a faulty fuel pump module, so proper diagnosis is necessary.
10. Can a DIYer fix the P0463 code on a 2015 Chevrolet Silverado?
Yes, if you have experience working with automotive electrical systems and the proper tools, you can inspect and replace the fuel level sensor or repair damaged wiring.
Discuss the causes and fixes for P0463 2015 Chevrolet Silverado OBDII Code
Code P0463 2015 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
