Kia Optima Hybrid: Emission Control System / Troubleshooting

Troubleshooting
Symptom
Suspect area
Engine will not start or struggle to start
Vapor hose damaged or disconnected
Engine struggles to start
Malfunction of the Purge Control Solenoid Valve
Rough idle or engine stalls
Vapor hose damaged or disconnected
Malfunction of the PCV valve
Rough idle
Malfunction of the Evaporative Emission Control System
Excessive oil consumption
Positive crankcase ventilation line clogged

Special Service Tools

Personal Protective Equipment NameIllustrationDescriptionInsulation gloveUsed when inspecting or working on the high voltage components[Insulation performance : 1000V / 300A or above]Insulation shoesUsed ...

Crankcase Emission Control System

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Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Virtual Engine Sound System Unit Repair procedures


Removal 1. Disconnect the negative(-) battery terminal. 2. Remove the glove box housing. (Refer to the BD group - "Crash pad") 3. Remove the VESS unit (A) with bracket after loosening the mounting nuts (2EA) and disconnecting the connector. Installation 1. Install the VESS unit and connect the connector. ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Components and Components Location


Component Location (1) 1. Buzzer2. RF receiver3. Smart key unit4. Interior antenna 15. Interior antenna 26. Trunk antenna7. Bumper antenna Component Location (2) 1. Door outside handle2. Trunk lid open switch3. FOB key ...

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