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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/ Auto A/C) - Diagnostic Codes (2 Of 2) >> AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System) >> DTC P0530-11: Refrigerant Pressure Sensor Circuit Short to Ground [11/2023 - ] >> Description

DTC P0530-11: Refrigerant Pressure Sensor Circuit Short to Ground [11/2023 - ]: Description

The air conditioning pressure sensor, which is installed to the high pressure side pipe to detect refrigerant pressure, sends a refrigerant pressure signal to the air conditioning amplifier assembly. The air conditioning amplifier assembly converts this signal to a pressure value according to the sensor characteristics and uses it to control the compressor.

This DTC is stored if refrigerant pressure on the high pressure side is extremely low.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from Priority
P0530-11 Refrigerant Pressure Sensor Circuit Short to Ground Diagnosis Condition:
  1. Ignition switch ON

Malfunction:

  1. Short (GND) in air conditioning pressure sensor circuit

Detection Time:

  1. Continuously for 4 seconds or more
  • Refrigerant volume
  • Air conditioning pressure sensor
  • Harness or connector
  • Air conditioning amplifier assembly
 Memorized Air Conditioner A
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