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.
Crankcase Ventilation Sensor
The crankcase ventilation sensor is a hall effect sensor mounted on the crankcase ventilation hose at the air inlet connection. The crankcase ventilation separator is mounted on the driver side rocker cover, with the crankcase ventilation hose connecting the separator to the crankcase ventilation sensor at the air inlet of the turbocharger. The crankcase ventilation hose on the separator side has a tamper proof connector. The crankcase ventilation sensor monitors the crankcase ventilation hose connection at the air inlet of the turbocharger. The crankcase ventilation sensor signal to the PCM indicates if the crankcase ventilation hose is connected or disconnected.
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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.