P1152 OBD Code Definition:
P1152 Lack Of HO2S21 Switch – Sensor Indicates Rich
P1152 OBD Code Description:
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Mass Air Flow Sensors (G70) faulty
- Intake Air System faulty/leaking (false Air)
- Fuel Injector(s) faulty
- Fuel Pump faulty
- Exhaust System leaking
- Secondary Air Injection System faulty/leaking
Possible Solutions
- Check Mass Air Flow Sensors (G70)
- Check Intake Air System for Leaks
- Check Fuel Injector(s)
- Check Fuel Pump
- Check Exhaust System for Leaks
- Check Secondary Air Injection System