This indicator light is part of the Engine Control System which monitors various emission control system components. If this light illuminates while driving, it indicates that a potential malfunction has been detected somewhere in the emission control system.
This light will also illuminate when the ignition switch is turned to the ON position, and will go out in a few seconds after the engine is started. If it illuminates while driving, or does not illuminate when the ignition switch is turned to the ON position, take your vehicle to your nearest authorized HYUNDAI dealer and have the system checked.
Generally, your vehicle will continue to be drivable, but have the system checked by an authorized HYUNDAI dealer promptly.
CAUTION
Hyundai Tucson (LM) 2010-2015 Service Manual: Components and Components Location
Component Location
1. Auto light sensor2. Head lamps3. Lighting switch (Auto)4. Tail lamps5. SJB (Smart Junction Box)6. BCM (Body Control Module)
...
Hyundai Tucson (LM) 2010-2015 Service Manual: Pressure Sensor Repair procedures
Inspection
If you have trouble code related to the pressure sensor check pressure sensor according to the inspection process.
Pressure Sensor Inspection Procedure
Measure the resistance of pressure sensor
1.
Turn ignition switch OFF.
2.
Disconnect the pressure ...