P0059
HO2S Bank 2 Sensor 1 Heater Resistance
Oxygen SensorsMODERATE
Описание
HO2S Bank-2 Sensor-1 Heater Resistance
Частые симптомы
- Extended bank 2 O2 sensor warm-up time
- Check Engine Light
- Possible slow bank 2 closed-loop operation
- Delayed bank 2 emission system readiness
- Reduced bank 2 cold emission performance
Возможные причины
- Bank 2 heater element resistance out of specification
- Aging bank 2 O2 sensor heater element
- Partial bank 2 heater element failure
- Corroded bank 2 sensor connections affecting resistance
- ECU bank 2 resistance measurement circuit fault
Диагностика
- 1. Measure bank 2 O2 sensor heater resistance
- 2. Compare with manufacturer specifications
- 3. Check bank 2 connections for corrosion or damage
- 4. Test bank 2 heater circuit voltage drop
- 5. Verify ECU bank 2 resistance measurement accuracy
Решения по ремонту
- Replace bank 2 oxygen sensor with out-of-spec resistance
- Clean or repair bank 2 corroded connections
- Replace faulty bank 2 wiring affecting resistance
- Replace ECU if bank 2 resistance measurement circuit faulty
- Reset multi-bank emission system adaptations
Профилактика
- Use quality O2 sensors for both banks
- Protect bank 2 sensor connections from corrosion
- Regular multi-bank emission system electrical checks