2025-03-12

PRESSURE TEMPERATURE SENSOR - LOW PRESSURE (Remove and Install)

Correction code 1840010302 FRT 0.00 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

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Note
This procedure requires the A/C Refrigerant (Recovery and Recharge) procedure to be performed. If not already automatically added to the Service Visit, add correction code 18200102 as a separate activity to the Service Visit.

Torque Specifications

Table 1. Torque Specifications: PRESSURE TEMPERATURE SENSOR - LOW PRESSURE (Remove and Install)
Description Torque Value Recommended Tools Reuse/Replace Notes
Low Pressure and Temperature Sensor
9 Nm (6.6 lbs-ft)
  • 1588741-00-A - KIT, SOCKET, MY, HVAC
  • Flex head ratchet/flex head torque wrench
  • 3 in extension
 N/A
  • Only use the special socket to remove and install this sensor

Remove

  1. Set up the AC machine.
  2. Open the LH front door and lower the LH front window.
  3. Place the vehicle in Service Mode by using the touchscreen. See Service Mode.
  4. Unlock the vehicle gateway. See Gateway (Unlock).
  5. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Thermal > Refrigerant System > Start Thermal Fill Drain (Refrigerant only) > Run, and allow the routine to complete.
  6. Remove the HEPA filter assembly. See SERVICE KIT - HEPA AND CARBON FILTERS (Remove and Replace).
  7. Disconnect the LV battery. See LV Power (Disconnect and Connect).
  8. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  9. Recover the A/C refrigerant. See A/C Refrigerant (Recovery and Recharge) (Maintenance).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Make sure there is no pressure in the A/C system before performing the following steps. Failure to do so may result in damage to components and/or personal injury.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    HFO-R1234yf and R134a are considered hazardous and, if handled incorrectly, can cause serious injury. Suitable personal protective equipment, consisting of face and eye protection, safety glasses, face shield, heat-proof gloves, chemical resistant gloves, rubber boots and apron or waterproof overall must be worn when carrying out operations on the air conditioning system.
  10. Release the locking tab, and then disconnect the electrical connector from the low pressure temperature sensor.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    DO NOT push down on the red locking tab. Pull the tab away from the connector until the connector is unlocked, and then continue pulling to release the connector.
  11. Use the P/T sensor socket to remove the low pressure temperature sensor from the supermanifold.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Use only hand tools to remove the PT sensor. Impact or power tools will break the threads.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Use only the P/T sensor socket to remove the sensor. Using other tools can damage the sensor.
    Informational PurposesAn informational icon, calling your attention
    Note
    For Sensata sensors, use the 24mm thin wall P/T sensor socket. For Bridgeport sensors, use the 21mm P/T sensor socket.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 1588741-00-A - KIT, SOCKET, MY, HVAC
    • Flex head ratchet/flex head torque wrench
    • 3 in extension
  12. Record the part numbers and serial numbers of the old and new sensors in the repair order.

Install

  1. Lubricate the new low pressure temperature sensor threads and O-ring with the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications.
  2. Install and hand-tighten the low pressure temperature sensor until the sensor O-ring just makes contact with the Supermanifold.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use an inspection mirror to visualize this and subsequent steps.
  3. Manually back off and tighten the low pressure temperature sensor in an incremental manner so that the sensor O-ring properly slides into the chamfer in the Supermanifold.
  4. If the low pressure temperature sensor O-ring appears to pinch, or no longer slides into the chamfer, stop and reverse thread the sensor until the O-ring no longer appears to be pinched.
  5. Continue to back off and tighten the low pressure temperature sensor until the O-ring slides completely into the chamfer and is no longer visible.
    Informational PurposesAn informational icon, calling your attention
    Note
    There should be no gap, and the sensor body should be bottomed out against the Supermanifold.
  6. Use the P/T sensor socket to tighten the low pressure temperature sensor to the specified torque value.
    9 Nm (6.6 lbs-ft)
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Use only hand tools to install the PT sensor. Impact or power tools will break the threads.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Use only the P/T sensor socket to install the sensor. Using other tools can damage the sensor.
    Informational PurposesAn informational icon, calling your attention
    Note
    For Sensata sensors, use the 24mm thin wall P/T sensor socket. For Bridgeport sensors, use the 21mm P/T sensor socket.
    Informational PurposesAn informational icon, calling your attention
    TIp
    Use of the following tool(s) is recommended:
    • 1588741-00-A - KIT, SOCKET, MY, HVAC
    • Flex head ratchet/flex head torque wrench
    • 3 in extension
  7. Connect the electrical harness to the low pressure temperature sensor, and then engage the locking tab.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Push the red locking tab towards the connector to engage the locking mechanism. DO NOT push down or pull up on the red locking tab.
  8. Perform the vacuum leak test and oil injection, and A/C refrigerant recharge. See A/C Refrigerant (Recovery and Recharge) (Maintenance).
  9. Connect the LV battery. See LV Power (Disconnect and Connect).
  10. Unlock the vehicle gateway. See Gateway (Unlock).
  11. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Thermal > Sensors and Valves > Run Heat Pump Commissioning > Run, and close once the routine is passed.
  12. Exit Service Mode. See Service Mode.
  13. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  14. Install the HEPA filter assembly. See SERVICE KIT - HEPA AND CARBON FILTERS (Remove and Replace).