This procedure covers the removal and replacement of the oil pressure sensor on the 2016-2024 Hyundai Tucson with the 2.5L I4 engine.

Warnings

Tools required

Parts

• Oil pressure sensor × 1 — Use OEM specification
• Thread sealant (liquid PTFE) × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and ensure engine is cold
2. Disconnect the negative battery terminal to prevent electrical shorts
3. Locate the oil pressure sensor on the driver's side of the engine block, below the intake manifold near the oil filter housing
4. Clear any covers or shields that may obstruct access to the sensor area

Procedure

1. 1

   Disconnect sensor electrical connector
   Press the locking tab on the electrical connector attached to the oil pressure sensor and pull the connector straight off. Do not pull on the wires themselves. Inspect the connector for oil contamination or corrosion.
2. 2

   Position oil catch container
   Place an oil drain pan or absorbent rags directly beneath the oil pressure sensor location. Expect approximately 1-2 ounces of engine oil to drain when the sensor is removed.
3. 3

   Remove oil pressure sensor
   Using a 24mm deep socket or dedicated oil pressure sensor socket with ratchet and extension, loosen the sensor by turning counterclockwise. Once loosened, complete removal by hand to control any oil spillage. Allow residual oil to drain into the catch container.
4. 4

   Clean sensor mounting surface
   Using a wire brush or clean rag, clean the sensor mounting hole threads in the engine block. Remove any old thread sealant residue, oil deposits, or debris. Ensure the sealing surface around the threads is clean and free of damage.
5. 5

   Prepare new sensor
   Apply a thin coat of thread sealant (liquid PTFE) to the threads of the new oil pressure sensor. Do not apply sealant to the first two threads to prevent contamination from entering the oil passages. Allow sealant to become tacky if specified by product instructions.
6. 6

   Install new oil pressure sensor
   Thread the new oil pressure sensor into the mounting hole by hand, turning clockwise. Ensure the sensor threads smoothly without cross-threading. Hand-tighten until the sensor is snug against the sealing surface.
   Torque spec

   Oil Pressure Sensor20 Nm (15 lb-ft)
7. 7

   Torque oil pressure sensor
   Using a torque wrench with the appropriate socket, tighten the oil pressure sensor to 20.0 Nm (15.0 lb-ft). Do not exceed this specification as over-torquing can damage the sensor or engine block threads.
   Torque spec

   Oil Pressure Sensor20 Nm (15 lb-ft)
8. 8

   Reconnect electrical connector
   Push the electrical connector onto the new oil pressure sensor until you hear or feel a positive click, confirming the locking tab is engaged. Gently tug on the connector to verify it is securely attached.
9. 9

   Reconnect battery and check oil level
   Reconnect the negative battery terminal. Check the engine oil level on the dipstick and top off if necessary to compensate for oil lost during sensor replacement.

Reassembly

1. Reinstall any covers or shields removed during preparation
2. Wipe down the work area and remove any oil-soaked rags or absorbent materials

Verification

• Start the engine and allow it to idle for 1-2 minutes while monitoring for oil leaks around the sensor
• Check that the oil pressure warning light on the instrument cluster extinguishes within a few seconds of starting
• Using a scan tool, verify that oil pressure readings from the sensor are within normal operating range (typically 20-80 psi depending on engine speed and temperature)
• Shut off the engine and perform a final visual inspection for any oil seepage around the sensor after the engine has been running
• Test drive the vehicle and confirm no oil pressure warning lights illuminate during normal operation

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