This procedure covers the removal and replacement of the fuel level sensor, which is part of the fuel pump module assembly located inside the fuel tank on 2018-2024 Honda Accord 1.5L Turbo models.

Warnings

Tools required

Parts

• Fuel level sensor assembly × 1 — Use OEM specification
• Fuel pump module O-ring seal × 1 — Use OEM specification
• Fuel line O-rings × 2 — Use OEM specification

Preparation

1. Park vehicle on level ground and apply parking brake
2. Ensure fuel tank is less than half full to minimize fuel spillage
3. Disconnect the negative battery cable and wait at least 3 minutes before proceeding
4. Remove the rear seat cushion by pulling up firmly on the front edge to release the clips
5. Gather all necessary tools and replacement parts before beginning
6. Have absorbent materials and a suitable container ready for fuel spillage

Procedure

1. 1

   Relieve fuel system pressure
   Remove the fuel pump relay from the under-hood fuse box (check owner's manual for exact location). Attempt to start the engine and let it run until it stalls from lack of fuel. Crank the engine for an additional 3 seconds to ensure pressure is fully relieved. Turn ignition off and reinstall the relay.
   ⚠️Do not skip this step. Pressurized fuel will spray forcefully when lines are disconnected.
2. 2

   Remove fuel pump access cover
   Locate the rectangular access cover under the rear seat area. Use a 10mm socket to remove the screws securing the metal access cover plate. Carefully lift the cover and set aside. Use shop rags around the area to catch any fuel vapors or spillage.
   Torque spec

   Cover Screws10 Nm (8 lb-ft)
3. 3

   Disconnect electrical connector
   Press the locking tab on the fuel pump module electrical connector and carefully pull straight up to disconnect. Ensure the connector is moved away from the work area to prevent contamination.
4. 4

   Disconnect fuel lines
   Using the appropriate fuel line disconnect tool, press the tool into the quick-connect fitting on the fuel feed line while pulling the line away from the pump module. Repeat for the return line if equipped. Place shop rags underneath to catch residual fuel. Allow fuel to drain into a suitable container.
   ⚠Residual fuel will drain from the lines. Keep drain pan and rags ready.
   Torque spec

   Fuel Line Fittings25 Nm (18 lb-ft)
5. 5

   Remove fuel pump lock ring
   Using the fuel pump lock ring tool or a brass drift and hammer, rotate the lock ring counterclockwise to unlock it. The ring has directional arrows marked on it. Carefully lift the lock ring up and out of the tank opening. Note the alignment marks on the pump module and tank for reinstallation.
   ⚠Do not use steel tools that could create sparks. Use only brass or approved plastic tools.
6. 6

   Remove fuel pump module
   Carefully lift the fuel pump module assembly straight up and out of the tank opening. Tilt the module slightly to clear the fuel level float arm. Be very careful not to damage the fuel level sensor float or arm during removal. Allow excess fuel to drain back into the tank. Place the module on clean shop rags.
   ⚠The float arm and fuel level sensor are fragile. Handle with care to avoid bending or breaking components.
7. 7

   Remove old fuel level sensor
   With the pump module assembly on a clean work surface, locate the fuel level sensor on the side of the module. Release the locking tab or remove the retaining clip securing the sensor. Carefully slide the sensor arm out of its track, ensuring the float arm does not catch on other components. Disconnect the electrical terminals if separate from the main connector.
8. 8

   Install new fuel level sensor
   Position the new fuel level sensor into the mounting bracket on the pump module. Ensure the float arm moves freely through its full range of motion without binding. Connect any electrical terminals and secure the sensor with its retaining clip or by engaging the locking tab until it clicks. Verify the sensor is properly seated.
9. 9

   Replace O-ring seal
   Remove the old O-ring seal from the groove at the top of the fuel pump module. Clean the groove thoroughly with a lint-free cloth. Install the new O-ring seal, ensuring it seats properly in the groove without twists or folds. Do not lubricate the O-ring with petroleum-based products.
   ℹ️A damaged or improperly seated O-ring will cause fuel leaks. Inspect carefully before installation.
10. 10

    Reinstall fuel pump module
    Carefully lower the fuel pump module back into the fuel tank opening. Align the marks noted during removal or align the module so the fuel lines will connect properly. Guide the float arm carefully to prevent bending. Press the module down until it seats against the O-ring. Ensure the module sits flush against the tank mounting surface.
11. 11

    Install lock ring
    Position the fuel pump lock ring over the module and align it with the tank threads. Rotate the lock ring clockwise using the lock ring tool until it is fully seated and tight. Ensure the locking tabs engage properly. The ring should be snug but do not over-tighten as this can damage the plastic tank threads.
12. 12

    Reconnect fuel lines
    Install new O-rings on the fuel line quick-connect fittings. Push each fuel line straight onto the pump module connections until you hear and feel a distinct click. Gently pull back on each line to verify it is securely locked in place.
    ⚠Always use new O-rings when reconnecting fuel lines to prevent leaks.
    Torque spec

    Fuel Line Fittings25 Nm (18 lb-ft)
13. 13

    Reconnect electrical connector
    Connect the electrical connector to the fuel pump module by pushing it straight down until the locking tab clicks into place. Ensure the connection is secure and the lock is fully engaged.
14. 14

    Reinstall access cover and rear seat
    Position the metal access cover over the opening and secure it with the original screws, tightening to the specified torque. Reinstall the rear seat cushion by aligning the hooks at the rear and pressing down firmly at the front until the clips engage.
    Torque spec

    Cover Screws10 Nm (8 lb-ft)
15. 15

    Restore power and prime fuel system
    Reconnect the negative battery cable. Turn the ignition to the ON position (do not start) for 2 seconds, then OFF. Repeat this cycle 3-4 times to prime the fuel system. Check the fuel pump module area and all connections for leaks. Start the engine and verify no leaks are present during operation.
    ⚠️Immediately shut off engine and disconnect battery if any fuel leaks are detected.

Reassembly

1. Ensure all fuel line connections are secure and using new O-rings as specified
2. Verify the fuel pump lock ring is properly tightened and seated
3. Confirm the access cover is secured with all screws torqued properly
4. Double-check that the rear seat cushion is fully engaged and secured

Verification

• Turn ignition to ON position and listen for the fuel pump to activate for approximately 2 seconds
• Check for any fuel odors in the cabin or around the access cover area
• Start the engine and verify it runs smoothly without stumbling or hesitation
• Use a scan tool or observe the fuel gauge to confirm the fuel level sensor is reading correctly and matches the actual fuel level in the tank
• Check for diagnostic trouble codes related to the fuel level sensor; clear any stored codes and verify they do not return
• Perform a test drive and monitor fuel gauge operation through various fuel levels if possible

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