DTC P2279-64: Intake Air System Leak - Signal plausibility failure: Action
- Check powertrain control module for related DTCs and refer to relevant DTC index
- Check air induction system for leakage
- Check EGR system for leakage
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the heated oxygen sensor heater circuit 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 and install a new heated oxygen sensor as required
- Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTCs and retest