P0040 Atención pronto
O2 Sensor Signals Swapped Bank 1 Sensor 1/ Bank 2 Sensor 1
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Descripción
This code means the engine computer has detected that the signals from the oxygen sensors in Bank 1 Sensor 1 and Bank 2 Sensor 1 have been swapped. These sensors are crucial for monitoring exhaust gases and adjusting fuel mixture.
Causas comunes
- Oxygen sensors installed incorrectly
- Wiring harness issue
- Faulty oxygen sensors
- PCM (Powertrain Control Module) issue
Síntomas
- Check Engine Light is on
- Reduced fuel economy
- Increased emissions