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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> ESC/AHB Diagnosis (HEV) >> DTC C1503-01: TCS Switch Error >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Open circuit monitoring (Switch circuit is short to battery).
  1. Short to power in ESC OFF switch circuit
  2. Defected ESC OFF switch
Enable Condition
  • When the TCS/ESC switch is ON for 1 minute.
Reset condition
  • Turn ignition switch off and on.
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