Crankcase Ventilation Hose Connection Sensor Circuit

Where it lives

For P04E1, the circuit described runs through the sensor. The description of P04E1 reports a fault at the sensor.

Check these first

• A failed crankcase ventilation hose connection sensor
• Carbon or oil contaminating the sensor
• Corrosion at the sensor connector
• An open or shorted sensor circuit

What to do next

1. Read the crankcase ventilation hose connection sensor on a scan tool
2. Check the sensor connector for corrosion or oil
3. Clean or replace a contaminated sensor
4. Check the sensor circuit for an open or short
5. Clear the code and retest

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