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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System (Except HV, W/ Manual A/C) - Diagnostic Codes, Circuit Tests & Symptom Tests >> AIR CONDITIONING SYSTEM (for Gasoline Model with Manual Air Conditioning System) >> DTC B1423: Open in Pressure Sensor Circuit / Abnormal Refrigerant Pressure [12/2019 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:

The air conditioning system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the air conditioning system after confirming that the communication systems are functioning properly.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]

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