This procedure covers the removal and replacement of the Manifold Absolute Pressure (MAP) sensor on the 2018-2024 Honda Accord 1.5L I4 Turbo engine.

Warnings

Tools required

Parts

• Manifold Absolute Pressure (MAP) sensor × 1 — Use OEM specification
• MAP sensor O-ring seal × 1 — Usually included with sensor

Preparation

1. Ensure engine is completely cool to the touch
2. Park vehicle on level ground and engage parking brake
3. Open hood and secure with prop rod
4. Disconnect negative battery terminal and wait 3 minutes for system capacitors to discharge

Procedure

1. 1

   Locate MAP sensor
   The MAP sensor is mounted on the intake manifold, typically on the driver's side near the throttle body. It is a small cylindrical sensor with a single electrical connector and secured by one or two small screws.
2. 2

   Disconnect electrical connector
   Press down on the locking tab of the MAP sensor electrical connector and carefully pull the connector straight off the sensor. Do not pull on the wires themselves. Inspect the connector terminals for corrosion or damage.
3. 3

   Remove MAP sensor mounting screws
   Using a Phillips screwdriver or 10mm socket, remove the MAP sensor mounting screw(s). Keep track of the screws as they are small and easily lost. Note the orientation of the sensor before removal.
   Torque spec

   MAP Sensor Screws3 Nm (2 lb-ft)
4. 4

   Remove MAP sensor from manifold
   Gently pull the MAP sensor straight out of the intake manifold. There may be a slight resistance due to the O-ring seal. Do not twist or rock the sensor excessively as this could damage the mounting boss on the manifold.
5. 5

   Inspect O-ring and mounting port
   Remove the old O-ring seal from the sensor or manifold port. Inspect the manifold mounting port for cracks, debris, or carbon buildup. Clean the port with a clean shop towel if necessary. Do not use any solvents that could damage the manifold.
6. 6

   Prepare new MAP sensor
   Install the new O-ring seal onto the new MAP sensor if not pre-installed. Lightly lubricate the O-ring with a small amount of clean engine oil to ease installation and prevent tearing. Verify the sensor orientation matches the original.
7. 7

   Install new MAP sensor
   Carefully insert the new MAP sensor straight into the intake manifold port, ensuring proper alignment. Push firmly until the sensor mounting flange is flush against the manifold surface. Do not force or cross-thread.
8. 8

   Install and torque mounting screws
   Install the MAP sensor mounting screw(s) and hand-tighten. Using a torque wrench, tighten the screws to specification in a cross-pattern if multiple screws are present. Do not exceed specified torque as the sensor body is plastic.
   Torque spec

   MAP Sensor Screws3 Nm (2 lb-ft)
9. 9

   Reconnect electrical connector
   Push the electrical connector firmly onto the MAP sensor until you hear or feel a positive click, indicating the locking tab has engaged. Gently tug on the connector to verify it is securely attached.
10. 10

    Reconnect battery and clear codes
    Reconnect the negative battery terminal. If a check engine light was present, it may need to be cleared using an OBD-II scanner, or it will clear itself after several successful drive cycles.

Reassembly

1. No disassembly of surrounding components is required for this procedure
2. Ensure all electrical connections are fully seated and locked

Verification

• Start the engine and verify it idles smoothly without any rough running or stalling
• Check for diagnostic trouble codes using an OBD-II scanner - there should be no MAP sensor related codes (P0105-P0109)
• Perform a test drive and monitor engine performance, especially during acceleration and idle
• Verify no vacuum leaks are present around the MAP sensor mounting area
• Confirm check engine light does not illuminate after several drive cycles

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