17519/P1111
From Ross-Tech Wiki
17519/P1111 Oxygen sensor control; Bank 1: System too lean
Possible Causes
- Mass Air Flow Sensors (G70) faulty
- Intake Air System faulty/leaking (false Air)
- Fuel Injector(s) faulty
- Insufficient Fuel Delivery
- Exhaust System leaking
- Faulty O2 Sensor(s)
Possible Solutions
- Check Mass Air Flow Sensors (G70)
- Check Intake Air System for Leaks
- Check Fuel Injector(s)
- Check Fuel Delivery Including Pump and Filter
- Check Exhaust System for Leaks
- Check O2 Sensor(s) Adaptation Values (Before Clearing Faults: Fuel Trim Information)