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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Abs/ESC Diagnosis (HEV) (1 Of 2)) >> DTC C1501-01: Switch Failure >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

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Troubleshooting Condition Possible Cause
Main Action
  • Monitor the switch signal
  1. EPB switch circuit open/short circuit
  2. Faulty EPB switch
  3. Driver's abnormal switch control (Too many activation, pull or push for long time or slowly push/pull switch)
Threshold Value
  • When the switch input signal does not match any of Neutral, Apply and Release more than 2 seconds
MIL
  • EPB warning lamp is activated
Reset Condition
  • When the EPB switch normal signal is inputted once for each Apply, Release, Neutral value in the same ignition cycle or after ignition switch turned OFF and back ON