Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 Hyundai Sonata Plug-In HybridFACTORY OEM SERVICE PROCEDURE
Engine Control System
Engine Control System
| Item | kgf.m | N.m | lb-ft |
|---|---|---|---|
| ECM installation nut | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| ECM bracket installation bolt/nut | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Mass air flow sensor clamp installation bolts | 0.3 ~ 0.5 | 2.9 ~ 4.9 | 2.2 ~ 3.6 |
| Mass air flow sensor installation bolts | 0.3 ~ 0.5 | 2.9 ~ 4.9 | 2.2 ~ 3.6 |
| Manifold absolute pressure sensor installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Engine Coolant Temperature Sensor installation | 3.0 ~ 4.0 | 29.4 ~ 39.2 | 21.7 ~ 28.9 |
| Crankshaft position sensor installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Camshaft position sensor (Bank 1 / Intake) installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Camshaft position sensor (Bank 1 / Exhaust) installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Knock sensor installation bolt | 1.9 ~ 2.4 | 18.6 ~ 23.5 | 13.7 ~ 17.4 |
| Heated oxygen sensor (Bank 1 / sensor 1) installation | 4.0 ~ 5.0 | 39.2 ~ 49.1 | 28.9 ~ 36.2 |
| Heated oxygen sensor (Bank 1 / sensor 2) installation | 4.0 ~ 5.0 | 39.2 ~ 49.1 | 28.9 ~ 36.2 |
| Rail pressure sensor installation | 3.0 ~ 3.6 | 30.0 ~ 35.0 | 22.1 ~ 25.8 |
| Electronic throttle body installation bolt | 0.8 ~ 1.0 | 7.8 ~ 9.8 | 5.8 ~ 7.2 |
| Purge Control Solenoid Valve bracket installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Electric EGR Control Valve installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| CVVT oil control valve (Bank 1 / Intake) installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| CVVT oil control valve (Bank 1 / Exhaust) installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
| Ignition coil installation bolt | 1.0 ~ 1.2 | 9.8 ~ 11.8 | 7.2 ~ 8.7 |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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