Crankshaft Position Sensor

This procedure covers the removal and replacement of the crankshaft position sensor on a 2017 Maserati Levante with the 3.0L V6 Twin Turbo engine.

Warnings

Tools required

Parts

• Crankshaft position sensor × 1 — Use OEM specification
• O-ring seal (if not included with sensor) × 1 — Use OEM specification

Preparation

1. Ensure engine is completely cool to the touch
2. Park vehicle on level surface and engage parking brake
3. Disconnect negative battery terminal and wait 5 minutes for systems to power down
4. Raise front of vehicle and secure on jack stands if additional access is needed
5. Remove engine undertray panels if equipped for better access

Procedure

1. 1

   Locate the crankshaft position sensor
   The crankshaft position sensor is located on the lower passenger side of the engine block, near the transmission bellhousing. It is positioned adjacent to the crankshaft reluctor ring. Use a mirror or inspection camera to visually confirm sensor location before proceeding.
2. 2

   Access the sensor area
   Remove any plastic engine covers or shields that obstruct access to the sensor area. This may include removing cover bolts. Work from underneath the vehicle for optimal access to the sensor on this engine configuration.
   Torque spec

   Cover Bolts18 Nm (13 lb-ft)
3. 3

   Disconnect electrical connector
   Locate the electrical connector on the crankshaft position sensor wiring harness. Press the release tab and carefully disconnect the connector from the sensor. Inspect connector pins for damage or corrosion. If connector has a securing bolt, remove it first.
   Torque spec

   Electrical Connector Bolts7 Nm (5 lb-ft)
4. 4

   Remove sensor mounting hardware
   Using a 10mm socket with extension, remove the sensor mounting bolt. The sensor is retained by a single bolt on this application. Keep the bolt in a safe location for reinstallation.
   Torque spec

   Mounting Bolts50 Nm (37 lb-ft)
5. 5

   Extract the sensor
   Carefully pull the crankshaft position sensor straight out from its bore in the engine block. The sensor may require gentle twisting motion to break the O-ring seal. Do not pry against the sensor body as this can damage the mounting bore. Inspect the O-ring for damage and ensure it comes out with the sensor.
   ⚠Do not allow sensor to drop or strike any surfaces. The internal components are sensitive to impact damage.
6. 6

   Inspect mounting bore and prepare surfaces
   Inspect the sensor mounting bore for debris, oil contamination, or metal particles. Clean the bore thoroughly with a lint-free rag. Check that the mounting surface is clean and flat. Remove any old O-ring material from the bore if present.
   ℹ️Metal particles near the sensor can affect signal quality and cause false readings or no-start conditions.
7. 7

   Prepare new sensor
   Remove the new crankshaft position sensor from packaging. Verify that the new O-ring is properly seated in the sensor groove. Lightly lubricate the O-ring with clean engine oil to ease installation. Compare old and new sensors to confirm correct part.
8. 8

   Install new sensor
   Carefully insert the new crankshaft position sensor straight into the mounting bore. Push firmly until the sensor mounting flange is flush against the engine block surface. Ensure the sensor is fully seated before installing the mounting bolt. The sensor should slide in smoothly without excessive force.
9. 9

   Torque sensor mounting bolt
   Install the sensor mounting bolt and hand-tighten initially. Using a torque wrench, tighten the mounting bolt to specification. Verify the sensor remains fully seated and flush with the mounting surface after torquing.
   ⚠Over-torquing can crack the sensor housing. Under-torquing can allow sensor movement and false readings.
   Torque spec

   Mounting Bolts50 Nm (37 lb-ft)
10. 10

    Reconnect electrical connector
    Reconnect the electrical connector to the crankshaft position sensor. Ensure the connector clicks into place and is fully seated. If equipped with a connector securing bolt, install and torque to specification. Verify connector lock is engaged.
    Torque spec

    Electrical Connector Bolts7 Nm (5 lb-ft)
11. 11

    Reinstall covers and shields
    Reinstall any engine covers, shields, or undertray panels that were removed for access. Torque all cover bolts to specification. Ensure no tools or parts remain in the engine bay.
    Torque spec

    Cover Bolts18 Nm (13 lb-ft)

Reassembly

1. Reconnect negative battery terminal
2. Lower vehicle from jack stands if raised
3. Clear any diagnostic trouble codes stored in engine control module
4. Enter radio security code if required

Verification

• Turn ignition to ON position (do not start). Verify no warning lights remain illuminated on instrument cluster
• Start engine and verify it starts normally without extended cranking
• Allow engine to idle for 2 minutes and confirm smooth operation with no rough idle or misfires
• Using scan tool, verify crankshaft position sensor signal is present and within normal parameters
• Rev engine gently to 2500 RPM and verify no hesitation or fault codes
• Test drive vehicle for 10-15 minutes to ensure proper operation under various loads
• Re-check for any fluid leaks or warning lights after test drive

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