AC Pressure Sensor

Replace the AC pressure sensor on a 2012-2017 Toyota Camry 2.5L I4 to restore proper AC system monitoring and function.

Warnings

Tools required

Parts

• AC pressure sensor × 1 — 88719-06020 or equivalent
• O-ring for pressure sensor × 1 — Use OEM specification

Fluids

• PAG 46 refrigerant oil — 0.1 qt
• R-134a refrigerant

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn off engine and allow to cool if recently driven
3. Verify AC system complaint and confirm pressure sensor diagnosis with scan tool
4. Connect AC recovery machine and fully recover all refrigerant from the system following EPA guidelines
5. Open hood and secure in upright position

Procedure

1. 1

   Locate the AC pressure sensor
   The AC pressure sensor is mounted on the high-pressure AC line near the front of the engine bay, typically on the liquid line between the condenser and evaporator. It has a 2-wire electrical connector and threads into the AC line.
2. 2

   Disconnect electrical connector
   Press the tab on the electrical connector and carefully pull it away from the AC pressure sensor. Move the wiring harness aside to provide working clearance.
3. 3

   Remove the pressure sensor
   Using a 10mm socket or appropriate wrench, carefully unscrew the AC pressure sensor from the AC line. Turn counterclockwise to remove. Some residual refrigerant or oil may escape during removal.
4. 4

   Inspect and clean the mounting port
   Examine the threaded port in the AC line for damage or debris. Clean the threads with a shop towel. Remove and discard the old O-ring from the sensor port.
5. 5

   Prepare new pressure sensor
   Install a new O-ring on the new AC pressure sensor. Lightly coat the O-ring with clean PAG 46 refrigerant oil to ensure proper seal and prevent damage during installation.
6. 6

   Install new pressure sensor
   Thread the new AC pressure sensor into the AC line port by hand until snug. Use a 10mm socket and torque wrench to tighten the sensor to the specified torque. Do not overtighten as this can damage the sensor or AC line threads.
   Torque spec

   AC Line Fittings20 Nm (15 lb-ft)
7. 7

   Reconnect electrical connector
   Push the electrical connector onto the new AC pressure sensor until it clicks firmly into place. Ensure the connection is secure and the locking tab is fully engaged.
8. 8

   Evacuate the AC system
   Connect the AC recovery/recharge machine to the system service ports. Run a vacuum on the system for at least 30 minutes to remove all moisture and air. The system should hold vacuum without loss for proper operation.
9. 9

   Recharge the AC system
   Recharge the AC system with the correct amount of R-134a refrigerant according to the underhood specification label (typically 18-20 oz for this model). Add the appropriate amount of PAG 46 oil if required by the service machine to compensate for oil lost during sensor replacement.

Reassembly

1. Verify all electrical connections are secure
2. Ensure no tools or parts remain in engine bay
3. Close hood securely

Verification

• Start the engine and turn AC to maximum cold setting with fan on high
• Verify AC compressor engages and cycles normally
• Use scan tool to confirm AC pressure sensor is reading pressure values (typically 150-250 PSI on high side at idle)
• Check for proper cold air output from vents (should be 40-50°F)
• Inspect sensor area for any refrigerant leaks using leak detector or soap solution
• Verify no AC-related diagnostic codes are present
• Test drive vehicle and confirm AC operates normally under various conditions

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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