Replace the Manifold Absolute Pressure (MAP) sensor on the 2017 Maserati Levante 3.0L V6 Twin Turbo engine to restore proper boost pressure monitoring and engine performance.

Warnings

Tools required

Parts

• Manifold Absolute Pressure Sensor × 1 — Use OEM Maserati specification
• MAP sensor O-ring seal (if applicable) × 1 — Often included with sensor

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool for at least 30 minutes
3. Disconnect negative battery terminal to prevent electrical issues
4. Remove engine cover by lifting from rear and pulling forward to release front clips
5. Locate MAP sensor on top of intake manifold between cylinder banks

Procedure

1. 1

   Access MAP sensor location
   With engine cover removed, identify the MAP sensor mounted on the intake manifold. It will have a single electrical connector and is typically located on the upper intake plenum. Note the routing of the wiring harness for proper reinstallation.
2. 2

   Disconnect electrical connector
   Press the locking tab on the MAP sensor electrical connector and gently pull the connector straight off the sensor. Do not pull on the wires themselves. If connector is stubborn, wiggle gently while pulling to avoid breaking the locking tab.
3. 3

   Remove MAP sensor mounting screws
   Using the T20 Torx bit, carefully remove the two screws securing the MAP sensor to the intake manifold. Keep screws in a safe location. The sensor may be sealed with an O-ring that creates slight resistance when removing.
   Torque spec

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

   Remove MAP sensor from manifold
   Gently twist and pull the MAP sensor straight out of the intake manifold bore. If resistance is felt, twist slightly while pulling to break the O-ring seal. Inspect the old sensor for oil contamination or damage which may indicate other engine issues.
5. 5

   Clean sensor mounting area
   Use a clean lint-free rag to wipe the sensor mounting bore and surrounding area on the intake manifold. Ensure no debris falls into the manifold opening. Check that the O-ring groove is clean and free of old seal material. Do not use abrasive cleaners on the manifold surface.
6. 6

   Prepare new MAP sensor
   Inspect the new MAP sensor for damage and verify it matches the old unit. Check that the O-ring or seal is properly seated on the new sensor. If using dielectric grease, apply a thin coat to the electrical connector pins to prevent corrosion.
7. 7

   Install new MAP sensor
   Insert the new MAP sensor straight into the manifold bore, aligning the mounting screw holes. Press firmly until the sensor seats completely against the manifold surface. Do not force if resistance is excessive; remove and check for obstructions.
8. 8

   Torque MAP sensor screws
   Thread both mounting screws by hand first to ensure proper alignment. Using the torque wrench set to 3.0 Nm (2.0 lb-ft), tighten the screws in a cross-pattern to ensure even pressure. These fasteners are very low torque; overtightening will crack the sensor housing.
   ⚠MAP sensor screws require only 3.0 Nm - overtightening will damage the sensor housing permanently.
   Torque spec

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

   Reconnect electrical connector
   Plug the electrical connector onto the new MAP sensor until the locking tab clicks into place. Gently tug on the connector to verify it is fully seated and locked. Route the wiring harness as originally positioned to avoid interference with moving components.
10. 10

    Reinstall engine cover
    Position the engine cover by inserting the front tabs first, then pressing down firmly on the rear until all clips engage with an audible click. Ensure the cover sits flush and is secure.
11. 11

    Reconnect battery and clear codes
    Reconnect the negative battery terminal. Using an OBD-II scanner, clear any stored diagnostic trouble codes related to the MAP sensor. This allows verification that the new sensor is functioning properly without old codes interfering.

Reassembly

1. Verify all tools and parts have been removed from engine bay
2. Ensure engine cover is properly secured and all clips are engaged
3. Double-check electrical connector is fully locked onto MAP sensor

Verification

• Start engine and verify it idles smoothly without rough running or stalling
• Check that no warning lights remain illuminated on the dashboard
• Use OBD-II scanner to verify no active MAP sensor codes (P0105-P0109)
• Test drive vehicle and confirm normal acceleration and boost response
• Monitor live MAP sensor data with scanner to verify readings are within 10-105 kPa range depending on throttle position and altitude

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