Oil Pressure Sensor

Replace the oil pressure sensor on the 2018-2024 Honda Accord 1.5L turbo engine to restore accurate oil pressure readings and eliminate warning lights.

Warnings

Tools required

Parts

• Oil pressure sensor × 1 — 37250-5AA-003 or equivalent OEM
• Thread sealant (Honda Bond or equivalent) × 1 — Use OEM specification

Preparation

1. Ensure engine is completely cool to the touch
2. Open hood and secure with prop rod
3. Locate the oil pressure sensor on the front lower section of the engine block, near the oil filter housing
4. Place oil drain pan or absorbent rags beneath the sensor area to catch residual oil
5. Disconnect the negative battery terminal if preferred for electrical safety, though not strictly required for this job

Procedure

1. 1

   Disconnect the electrical connector
   Locate the electrical connector attached to the oil pressure sensor. Press the locking tab and pull the connector straight off the sensor. Inspect the connector terminals for corrosion or damage.
2. 2

   Remove the old oil pressure sensor
   Using the 19mm deep socket and ratchet with extension, turn the oil pressure sensor counterclockwise to remove it from the engine block. Be prepared for a small amount of oil to drain from the sensor port. Allow residual oil to drain into the pan below.
3. 3

   Clean the sensor mounting area
   Use a wire brush or plastic bristle brush to clean the sensor threads in the engine block. Remove any old thread sealant, debris, or metal shavings. Wipe the area clean with a lint-free cloth to ensure a proper seal.
4. 4

   Prepare the new sensor
   Apply a small amount of thread sealant to the threads of the new oil pressure sensor. Apply sealant evenly around the threads, avoiding the first two threads closest to the sensor tip to prevent sealant from entering the oil passage.
5. 5

   Install the new oil pressure sensor
   Thread the new sensor into the engine block by hand until finger-tight, ensuring it threads smoothly without cross-threading. Use the torque wrench and socket to tighten the sensor to the specified torque value.
   Torque spec

   Oil Pressure Sensor20 Nm (15 lb-ft)
6. 6

   Reconnect the electrical connector
   Push the electrical connector firmly onto the new oil pressure sensor until you hear or feel a positive click, indicating the locking tab has engaged. Gently tug on the connector to verify it is secure.
7. 7

   Clean up and check for leaks
   Wipe away any spilled oil from the engine block and surrounding components. Remove the drain pan and rags from beneath the vehicle. If the battery was disconnected, reconnect the negative terminal.

Reassembly

1. Ensure the electrical connector is fully seated and locked onto the sensor
2. Verify no tools or materials are left in the engine bay
3. Close the hood after final inspection

Verification

• Start the engine and verify the oil pressure warning light turns off within a few seconds
• Allow the engine to idle for 2-3 minutes and inspect the sensor area for any oil leaks
• Use a scan tool if available to verify oil pressure readings are within normal range (typically 30-80 psi at operating temperature)
• Turn off the engine and perform a final visual inspection of the sensor installation and surrounding area

Related trouble codes on this vehicle

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