Hyundai Sonata LF Quiz
Engine Control System/Fuel System

Electronic Throttle Control (ETC) System Troubleshooting

In this manual: Engine Control System/Fuel 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

Fail-Safe Mode

Item Fail-safe
ETC Motor Throttle Stuck at 7°
TPS TPS 1 Fault ECM Reads TPS2
APS 2 Fault ECM Reads TPS1
TPS 1,2 Malfunction Throttle Stuck at 7°
APS APS 1 Malfunction ECM Reads APS 2
APS 2 Malfunction ECM Reads APS 1
APS 1,2 Malfunction Engine Idle Condition

When the accelerator value sticks at 7°, engine speed is limited below 1500 rpm and maximum vehicle speed to 40 ~ 50 km/h

Test yourself

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