Kia Niro: Emission Control System / Troubleshooting

Troubleshooting
Symptom
Suspected area
Engine will not start or hard 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

Schematic diagrams
Schematic Diagram ...

Crankcase Emission Control System
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Other information:

Kia Niro 2017 (DE HEV) Service Manual: Auto Defogging Actuator Repair procedures
Inspection 1. Switch "OFF" the ignition. 2. Disconnect the auto defogging sensor connector. 3. Connect the power (+) terminal to mode actuator connector terminal 3, and ground the negative (-) terminal to t ...

Kia Niro 2017 (DE HEV) Service Manual: Curtain Airbag (CAB) Module Repair procedures
Removal 1. Disconnect the battery negative terminal, and wait for at least three minutes before beginning to work. 2. Remove the roof trim. (Refer to Body (Interior and Exterior) - "Roof trim assembly") 3. ...

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