DTC P04FC-64: Crankcase Ventilation System Performance - Signal plausibility failure: Action
- Refer to the appropriate System Wiring Diagram(s) and check the low pressure exhaust gas recirculation outlet temperature sensor for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Check engine crankcase ventilation system is free from leakage/blockage, components are correctly installed, not loose or that damaged pipework is allowing leakage