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Home >> Lexus >> 2009 >> IS 250 RWD, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Intuitive Parking Assist (Diagnostic Codes & Circuit Tests) >> Intuitive Parking Assist System >> DTC B2237: Rear Left Sensor Malfunction >> Description

DTC B2237: Rear Left Sensor Malfunction: Description

The No. 1 ultrasonic sensor (rear left sensor) is installed on the rear bumper.

The clearance warning ECU detects obstacles based on signals received from the rear left sensor. If the rear left sensor's circuit has an open, short or other malfunction, it will not function normally.

Fig 1: Identifying Ultrasonic Sensor Areas
GTY126497Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC No. DTC Detection Condition Trouble Area
B2237 Malfunction of No. 1 ultrasonic sensor (Rear left sensor)
  • No. 1 ultrasonic sensor
  • Wire harness
  • Clearance warning ECU