P0463 2017 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 2017 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 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 P0463 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 P0463 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 P0463 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 P0463 2017 Chevrolet Silverado Code
What does the OBDII code P0463 mean on a 2017 Chevrolet Silverado?
1. P0463 indicates "Fuel Level Sensor Circuit High Voltage," meaning the fuel level sensor is sending a higher-than-expected voltage signal to the Powertrain Control Module (PCM). 2.
What are the common symptoms of code P0463 on a 2017 Chevrolet Silverado?
Symptoms include an inaccurate fuel gauge reading, the check engine light turning on, and potential difficulty estimating fuel range. 3.
What causes the P0463 code to appear on a 2017 Chevrolet Silverado?
Common causes include a faulty fuel level sensor, damaged wiring or connectors in the fuel sensor circuit, or a malfunctioning PCM. 4.
Can a bad fuel pump cause the P0463 code on a 2017 Chevrolet Silverado?
While the fuel pump itself is not typically the cause, issues with the fuel pump module, which houses the fuel level sensor, can trigger this code. 5.
Is it safe to drive with the P0463 code on a 2017 Chevrolet Silverado?
While the vehicle may still be drivable, an inaccurate fuel gauge can lead to running out of fuel unexpectedly, which can be dangerous. 6.
How do you diagnose the P0463 code on a 2017 Chevrolet Silverado?
Diagnosis involves scanning for codes, inspecting the wiring and connectors for damage, testing the fuel level sensor for proper resistance, and checking the voltage signal to the PCM. 7.
How much does it cost to fix the P0463 code on a 2017 Chevrolet Silverado?
Repair costs vary but typically range from $150 to $500, depending on whether the issue is with the fuel level sensor, wiring, or another component. 8.
Can a loose or corroded connector cause the P0463 code on a 2017 Chevrolet Silverado?
Yes, a loose or corroded connector in the fuel level sensor circuit can disrupt the signal and cause this code. 9.
Does the P0463 code always require replacing the fuel level sensor?
No, the issue can sometimes be resolved by repairing damaged wiring, cleaning connections, or addressing a PCM problem without replacing the sensor. 10.
Can a software update fix the P0463 code on a 2017 Chevrolet Silverado?
In rare cases, a PCM software update might resolve the issue if it's caused by a programming error, but this is uncommon.
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