Crankcase Ventilation Hose Connection Sensor Circuit Low

Where it lives

For P04E2, the sensor sits on the circuit this code reports. The description of P04E2 reports a fault at the sensor.

Check these first

• A short to ground in the hose connection sensor circuit
• A failed crankcase ventilation hose connection sensor
• Oil or water in the sensor connector
• Corroded sensor wiring

What to do next

1. Check the hose connection sensor circuit for a short to ground
2. Read the hose connection sensor on a scan tool
3. Inspect the sensor connector for oil or water
4. Replace the hose connection sensor if the signal stays low
5. Clear the code and retest

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