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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 90 (Heating / Air Conditioning System (HV) - Diagnostic Codes (1 Of 3)) >> AIR CONDITIONING SYSTEM (for HV Model) >> DTC B1279: Lost Communication with Humidity/Rain Sensor LIN [12/2019 - 10/2021] >> Description

DTC B1279: Lost Communication with Humidity/Rain Sensor LIN [12/2019 - 10/2021]: Description

WARNING: This page is about a different variant/trim than selected.

The main body ECU (multiplex network body ECU) and windshield humidity sensor communicate via LIN communication.

The main body ECU (multiplex network body ECU) stores this DTC if communication becomes abnormal.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B1279 Lost Communication with Humidity/Rain Sensor LIN Lost communication with windshield humidity sensor
  • Harness or connector
  • Main body ECU (multiplex network body ECU)
  • Windshield humidity sensor (air conditioning thermistor assembly)*2
  • Windshield humidity sensor (rain sensor)*3
 Memorized
(10 sec. or more)*1

*1: The air conditioning amplifier assembly stores this DTC if the malfunction has occurred for the period of time indicated in the brackets.

*2: w/o Auto Wiper System

*3: w/ Auto Wiper System

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