Hyundai Sonata LF Quiz
DCT (Dual Clutch Transmission) System

Inhibitor Switch Troubleshooting

In this manual: DCT (Dual Clutch Transmission) System
General Information — 9Engine Mechanical System — 90Engine Electrical System — 58Emission Control System — 24Engine Control System/Fuel System — 114Drive Shaft and Axle — 15Suspension System — 35Steering — 19Restraints — 50Brake System — 54Body (Interior and Exterior) — 213Body Electrical System — 241Heating, Ventilation, and Air Conditioning — 56DCT (Dual Clutch Transmission) System — 52
~1min read

Diagnostic Trouble Code Troubleshooting

Symptom Troubleshooting

Main Symptom Possible Cause Components to Inspect and Remedy
Shift lever does not operate
Gear position not indicated on instrument panel
Shock occurs when shifting the shift lever
Warning lamp is on
Engine stops when vehicle is parked		 Inhibitor switch circuit malfunction
Abnormal inhibitor switch operation		 Check the flow in the diagnostic chart and replace the inhibitor switch.
"N" position inhibitor switch is faulty Adjust the "N" position using the "N" position adjusting tool (see Automatic Transmission System - Inhibitor Switch).
Shift cable is incorrectly separated Adjust the clearance between the shift cables (see Automatic Transmission System - Inhibitor Switch).
Poor ground condition in the reverse light circuit Check the ground condition of the reverse light and tighten it.
Inhibitor switch side circuit malfunction Check the power terminal connection of the junction box and the fuse terminal (TCU2), then replace the junction box or adjust the clearance.
Check inside the inhibitor switch connector for foreign matter and check whether the terminal is bent.
Poor ground condition on the inhibitor switch wire Check the ground condition of the wire and tighten it.
Inhibitor switch faulty (open/short circuit) Replace the inhibitor switch (see Inhibitor Switch Inspection).

Test yourself

A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.