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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 C1604: ECU Hardware Error >> 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
  • Inspect the ECU via self-diagnosis
  1. Faulty AHLS ECU
Prerequisite condition
  • Turn ON the ignition switch, engine and headlamp.
Threshold Value
  • The ECU hardware has an error (A/D converter Fail)
Diagnosis time
  • Immediately