P0463 2014 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 2014 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 2014 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 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?
Need more information on how to fix the P0463 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0463 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0463 2014 Chevrolet Silverado Code
1. What does the OBDII code P0463 mean on a 2014 Chevrolet Silverado?
P0463 indicates that the fuel level sensor is reporting a high voltage condition, suggesting an issue with the fuel level sensor circuit or the sensor itself.
2. What are the common symptoms of the P0463 code in a 2014 Chevrolet Silverado?
Symptoms may include an inaccurate or fluctuating fuel gauge, the check engine light turning on, and potential difficulty in determining the actual fuel level.
3. What causes the P0463 code on a 2014 Chevrolet Silverado?
Common causes include a faulty fuel level sensor, damaged wiring or connections in the fuel level sensor circuit, or a malfunctioning instrument cluster.
4. Can a loose fuel tank connector cause the P0463 code?
Yes, a loose or corroded connector at the fuel tank can disrupt the signal from the fuel level sensor, triggering the P0463 code.
5. How do you diagnose the P0463 code on a 2014 Chevrolet Silverado?
Diagnosis typically involves checking the wiring and connectors for damage or corrosion, testing the fuel level sensor for proper operation, and using a scan tool to monitor sensor voltage readings.
6. Is it safe to drive a 2014 Chevrolet Silverado with the P0463 code?
While the vehicle may still be drivable, an inaccurate fuel gauge can lead to running out of fuel unexpectedly, so the issue should be addressed promptly.
7. How much does it cost to repair the P0463 code on a 2014 Chevrolet Silverado?
Repair costs can vary but typically range from $150 to $400, depending on whether the fuel level sensor, wiring, or other components need replacement.
8. Can a P0463 code cause poor fuel economy?
The code itself does not directly affect fuel economy, but relying on an inaccurate fuel gauge might lead to inefficient fueling habits.
9. Do I need to replace the fuel pump to fix the P0463 code on a 2014 Chevrolet Silverado?
Not necessarily. The fuel level sensor is often integrated with the fuel pump assembly, but if the sensor is faulty, it may be possible to replace just the sensor instead of the entire pump.
10. How can I prevent the P0463 code from occurring again?
To prevent recurrence, ensure all electrical connections to the fuel level sensor are secure and free of corrosion, and avoid physical damage to the fuel tank or wiring harness.
Discuss the causes and fixes for P0463 2014 Chevrolet Silverado OBDII Code
Code P0463 2014 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.
