P0030
Oxygen Sensor B1 S1 Heating Circuit Malfunction
Oxygen SensorsMODERATE
Описание
Oxygen (Lambda) Sensor B1 S1: Heating Circuit, Malfunction / Open Circuit
Частые симптомы
- Extended warm-up time
- Poor cold start performance
- Check Engine Light
- Possible increased emissions
- Reduced fuel economy during warm-up
Возможные причины
- Failed O2 sensor heating element
- Open circuit in heater wiring
- Blown O2 sensor heater fuse
- Corroded electrical connectors
- ECU heater control circuit fault
Диагностика
- 1. Check O2 sensor heater fuse
- 2. Test continuity in heater circuit
- 3. Measure heater element resistance
- 4. Check voltage at O2 sensor heater
- 5. Inspect wiring and connectors
Решения по ремонту
- Replace faulty oxygen sensor
- Repair open heater wiring
- Replace blown fuse
- Clean corroded connectors
- Replace ECU if heater control failed
Профилактика
- Avoid short trips that prevent O2 sensor warm-up
- Protect wiring from road debris
- Use quality replacement sensors