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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 141 (Auto Headlamp Leveling System Diagnosis) >> DTC C1255: Height Sensor Range Over >> DTC Information And Inspection >> DTC Setting Condition

DTC Setting Condition

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Trouble shooting Condition Possible Cause
Main action
  • Monitor the output signal from the vehicle height sensor.
  1. Out of the sensing range (Excess sensor angle)
  2. Faulty height sensor
  3. Misplacement or damage (possible accident) of the height sensor ring cage
  4. Inspect the AHLS ECU
Prerequisite condition
  • Turn ON the ignition switch, engine and headlamp.
Threshold Value
  • After calibration, the sensing angle exceeds the starting point by ±45° or over.
Diagnosis time
  • over 2 sec.
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