P0464 2018 Chevrolet Silverado Code - Fuel Level Sensor Circuit Intermittent
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
- P0464 2018 Chevrolet Silverado indicates Fuel Level Sensor Circuit Intermittent.
- 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 P0464 2018 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 fuel level change is greater than 10% for a duration lasting less than 30 seconds.
What are the Possible Causes of the DTC P0464 2018 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 P0464 2018 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 P0464 2018 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 P0464 2018 Chevrolet Silverado Code
What does OBDII code P0464 mean on a 2018 Chevrolet Silverado?
P0464 indicates an intermittent issue in the fuel level sensor circuit, which can cause erratic or inaccurate fuel level readings.
What are the common symptoms of code P0464 in a 2018 Silverado?
Symptoms include fluctuating or inaccurate fuel gauge readings, the fuel warning light turning on unexpectedly, and potential loss of fuel level data on the dashboard.
What causes code P0464 in a 2018 Chevrolet Silverado?
Common causes include a faulty fuel level sensor, loose or corroded wiring connections, a damaged fuel pump module, or electrical circuit issues.
Can a bad fuel level sensor trigger P0464?
Yes, a malfunctioning or worn-out fuel level sensor is one of the most common causes of this code.
How do you diagnose P0464 in a Chevrolet Silverado?
Diagnosis involves checking the fuel level sensor’s wiring and connections, testing the sensor for proper operation, and using a scan tool to monitor live fuel level data.
Is it safe to drive with code P0464 active?
While the vehicle may still operate normally, inaccurate fuel level readings can lead to running out of fuel unexpectedly, which can be unsafe.
How do you fix OBDII code P0464 on a 2018 Silverado?
Repairs may include replacing the fuel level sensor, repairing damaged wiring, cleaning corroded connectors, or replacing the fuel pump module if necessary.
Can a loose electrical connection cause P0464?
Yes, loose or damaged wiring connections in the fuel level sensor circuit can cause intermittent signals and trigger this code.
Will clearing the code fix P0464 permanently?
Clearing the code without addressing the root cause will not fix the problem; the code is likely to return until the underlying issue is resolved.
How much does it cost to fix code P0464 on a Chevrolet Silverado?
Repair costs vary but may range from $100 to $500, depending on whether the issue is a simple wiring repair or requires replacing the fuel level sensor or fuel pump module.
Discuss the causes and fixes for P0464 2018 Chevrolet Silverado OBDII Code
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