P0040: Oxygen Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2 Sensor 1 – When Your Car’s Brain Gets Its Wires Crossed
Ever wondered why your check engine light is on and your car’s running rough? It might be due to a P0040 code. This diagnostic trouble code indicates that your vehicle’s computer thinks the oxygen sensor signals from Bank 1 Sensor 1 and Bank 2 Sensor 1 have been swapped. The P0040 code is set when … Read more