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Home >> Kia >> 2020 >> Optima S >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Anti-Lock Brake System (Abs)/Electronic Stability Control (ESC) Diagnosis) >> DTC C1503-01: TCS Switch Error >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting 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 switch circuit signal
  1. Short to power in ESP (ESC/TCS) OFF switch circuit
  2. Defected ESP (ESC/TCS) OFF switch
Threshold value
  • When the ESP (TCS/ESC) switch is ON for 1 minute.
Diagnosis time
  • 60 seconds
MIL
  • No MIL on (DTC only)
Reset condition
  • After ignition switch turned OFF and ON.

ESP: Electronic Stability Control Program

TCS: Traction Control System

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