P0058

Описание

Heater Oxygen Sensor-2 Bank 2, Signal too High

Частые симптомы

• Possible bank 2 downstream O2 sensor overheating
• Check Engine Light
• Potential bank 2 downstream sensor damage
• Erratic bank 2 catalyst monitoring
• Possible blown bank 2 downstream heater fuse

Возможные причины

• Short to power in bank 2 downstream heater circuit
• Failed bank 2 downstream O2 sensor internal short
• ECU bank 2 downstream driver circuit malfunction
• Bank 2 downstream wiring harness short to 12V
• Aftermarket bank 2 downstream sensor issues

Диагностика

1. 1. Test bank 2 downstream heater circuit for shorts to power
2. 2. Check bank 2 downstream O2 sensor heater resistance
3. 3. Inspect bank 2 downstream wiring harness
4. 4. Test ECU bank 2 downstream heater control
5. 5. Check for aftermarket bank 2 downstream sensors

Решения по ремонту

• Repair shorted bank 2 downstream heater wiring
• Replace faulty bank 2 downstream oxygen sensor
• Remove interfering bank 2 aftermarket components
• Replace ECU if bank 2 downstream driver failed
• Reset bank 2 emission system adaptations

Профилактика

• Use OEM bank 2 downstream sensors for proper catalyst monitoring
• Regular bank 2 downstream wiring inspection
• Avoid modifying bank 2 downstream sensor circuits