What Does P0464 Mean?
The fuel level sensor circuit is exhibiting intermittent behavior, with the signal cutting in and out or jumping erratically. The ECM has detected that the fuel level reading changes too rapidly or inconsistently compared to actual driving conditions. The fuel gauge may bounce between full and empty, flicker, or occasionally read correctly before jumping to an incorrect level.
Common Causes
35%
Worn fuel level sender resistor card with intermittent dead spots
25%
Loose or corroded connection at the fuel pump module connector
20%
Intermittent break in the fuel level signal wiring
12%
Fuel sloshing causing float arm to contact tank internals intermittently
8%
Intermittent ground connection at the fuel sender module
Diagnostic Steps
1
Monitor the fuel level sensor PID on the scan tool for at least 5 minutes while driving over bumps and turns. Log the data and look for sudden jumps exceeding 10% that do not correlate with vehicle motion.
2
Access the fuel pump module connector and perform a wiggle test on the connector and harness while monitoring the fuel level PID. Any fluctuation pinpoints an intermittent connection.
3
Measure the fuel level sender resistance while gently tapping the fuel pump module and moving the float arm slowly through its range. Resistance should change smoothly — any sudden jumps or dropout to OL confirms a worn sender.
4
Inspect all wiring from the fuel tank to the ECM for chafing, particularly where the harness passes through grommets, near heat shields, or across suspension mounting points.
5
Check the fuel tank connector for moisture intrusion, corroded pins, or a loose locking tab. Clean with contact cleaner, apply dielectric grease, and ensure a firm lock.
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
The fuel level sensor circuit is exhibiting intermittent behavior, with the signal cutting in and out or jumping erratically. The ECM has detected that the fuel level reading changes too rapidly or inconsistently compared to actual driving conditions. The fuel gauge may bounce between full and empty...
The most common cause of P0464 (Evaporative Emission Control System Pressure Sensor Intermittent / Fuel Level Sensor Circuit Intermittent) is: Worn fuel level sender resistor card with intermittent dead spots
Typical repair costs for P0464 range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive, but the erratic fuel gauge creates a risk of running out of fuel. The intermittent nature makes it easy to dismiss, but the gauge cannot be trusted. Use trip odometer to track fuel consumption.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0464 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System
Difficulty
Type
Generic (SAE)
Recommended Tools
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