P0041

Описание

O2 Bank-1 Sensor-2 Signals Swapped w/ O2 Bank-2 Sensor-2

Частые симптомы

• Incorrect catalyst efficiency readings
• Check Engine Light
• Possible false catalyst codes
• Cross-bank emission monitoring errors
• Erratic post-catalyst readings

Возможные причины

• Downstream O2 sensor wiring crossed between banks
• Incorrect downstream sensor installation
• Manufacturing downstream wiring error
• Harness damage affecting downstream sensors
• ECU downstream bank confusion

Диагностика

1. 1. Check downstream O2 sensor wiring routing
2. 2. Verify downstream sensor locations
3. 3. Test downstream sensor signals individually
4. 4. Inspect downstream wiring harness
5. 5. Monitor catalyst efficiency by bank

Решения по ремонту

• Correct crossed downstream O2 wiring
• Reinstall downstream sensors correctly
• Repair damaged downstream wiring
• Replace incorrect downstream harness
• Reset emission system adaptations

Профилактика

• Label downstream sensors during exhaust work
• Follow emission system wiring diagrams
• Verify all O2 sensor locations