This procedure covers the removal and replacement of the Mass Air Flow (MAF) sensor on a 2014 Ram 2500 with the 6.7L Cummins diesel engine.

Warnings

Tools required

Parts

• Mass Air Flow Sensor × 1 — Mopar 68232063AA or equivalent
• Air intake boot clamps (if damaged) × 2 — Use OEM specification

Preparation

1. Park vehicle on level ground and set parking brake
2. Turn ignition off and remove key
3. Allow engine to cool for at least 30 minutes if recently operated
4. Open hood and secure with prop rod

Procedure

1. 1

   Locate the MAF sensor
   The MAF sensor is mounted in the intake tube downstream of the air filter housing. It is a black plastic component with an electrical connector on top and is secured to the intake tube with two Torx screws.
2. 2

   Disconnect the electrical connector
   Press down on the red locking tab on the MAF sensor electrical connector and pull the connector straight off the sensor. Do not twist or bend the connector excessively.
3. 3

   Loosen intake tube clamps if necessary
   If access is restricted, loosen the hose clamps on either side of the MAF sensor location using a flat blade screwdriver. This will allow slight movement of the intake tube for better access. Do not fully remove the clamps or tube unless absolutely necessary.
   Torque spec

   Air Intake Clamps3 Nm (2 lb-ft)
4. 4

   Remove MAF sensor mounting screws
   Using the T20 Torx driver, remove the two screws securing the MAF sensor to the intake tube. Keep these screws in a safe place as they will be reused unless new hardware is provided with the replacement sensor.
   ⚠Be careful not to drop screws into the intake system
5. 5

   Remove the MAF sensor
   Carefully pull the MAF sensor straight out of the intake tube. Avoid touching the sensing element inside the sensor body. Inspect the O-ring seal on the sensor body for damage.
6. 6

   Inspect intake tube opening
   Look inside the intake tube opening where the MAF sensor was mounted. Check for debris, oil contamination, or damage. Wipe clean with a shop towel if necessary. Do not allow debris to fall into the intake system.
7. 7

   Install new MAF sensor
   Align the new MAF sensor with the mounting holes in the intake tube, ensuring the sensor element is oriented correctly (arrow on sensor body should point in direction of airflow toward turbocharger). Carefully insert the sensor into the tube opening, ensuring the O-ring seals properly.
8. 8

   Install and torque mounting screws
   Insert the two T20 Torx screws and hand-tighten them. Using a torque wrench, tighten the screws to specification in a cross pattern to ensure even seating.
   Torque spec

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

   Reconnect electrical connector
   Push the electrical connector firmly onto the MAF sensor until you hear and feel a click. Tug gently on the connector to verify it is fully locked in place.
10. 10

    Retighten intake tube clamps
    If the intake tube clamps were loosened in Step 3, retighten them to specification using a torque wrench and appropriate socket.
    Torque spec

    Air Intake Clamps3 Nm (2 lb-ft)

Reassembly

1. Verify all electrical connections are secure and fully seated
2. Ensure no tools or parts have been left in the engine compartment
3. Close hood securely

Verification

• Start the engine and allow it to idle for 2-3 minutes, listening for any unusual intake air leaks or whistling sounds
• Verify that no check engine light or MAF sensor-related trouble codes are present using a scan tool
• Test drive the vehicle and confirm smooth acceleration and normal engine performance
• Check for proper turbocharger boost pressure and throttle response during moderate acceleration

More procedures for this vehicle