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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 P0530-15: Refrigerant Pressure Sensor Circuit Short to Battery or Open [11/2023 - ] >> Description

DTC P0530-15: Refrigerant Pressure Sensor Circuit Short to Battery or Open [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.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from Priority
P0530-15 Refrigerant Pressure Sensor Circuit Short to Battery or Open Diagnosis Condition:
  1. Ignition switch ON

Malfunction:

  1. Open or short (+B) in air conditioning pressure sensor circuit

Detection Time:

  1. Continuously for 4 seconds or more
  • Air conditioning pressure sensor
  • Harness or connector
  • Air conditioning amplifier assembly
Memorized Air Conditioner A
DTC DETECTION CONDITION COMBINATION TABLE

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Ignition switch ON
Malfunction Open in air conditioning pressure sensor circuit -
Short (+B) in air conditioning pressure sensor circuit -
Detection Time Continuously for 4 seconds or more Continuously for 4 seconds or more
Trip Count 1 trip 1 trip

HINT: 

If the conditions of either of these patterns are detected, a DTC will be stored.