Kia Optima Hybrid Owner's Manual Quiz
Engine Control System/Fuel System

Electronic Throttle Control (ETC) System Troubleshooting

In this manual: Engine Control System/Fuel System
General Information — 4Engine Mechanical System — 50Engine Electrical System — 20Emission Control System — 30Engine Control System/Fuel System — 84Automatic Transmission — 98Drive Shaft and Axle — 15Suspension System — 36Steering — 12Restraints — 50Brake System — 38Body (Interior and Exterior) — 54Body Electrical System — 233Heating, Ventilation, and Air Conditioning — 57
~1min read

Fail-Safe Mode

Item Fail-safe
ETC Motor Throttle Valve Stuck at 5°
TPS TPS 1 Fault Replace the TPS 2
APS 2 Fault Replace it with TPS 1.
TPS 1,2 Malfunction Throttle Valve Stuck at 5°
APS APS 1 Malfunction Replace it with APS 2.
APS 2 Malfunction Replace it with APS 1.
APS 1,2 Malfunction Throttle Valve Stuck at 5°

When the accelerator value is stuck at 5°, engine speed is limited to below 1500 rpm and vehicle maximum speed to 40 ~ 50 km/h

Test yourself

A quick Kia Optima Hybrid Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.