P0040 - Oxygen Sensor Signals Swapped Bank 1 Sensor 1/Bank 2 Sensor 1 - DTC Chart

P0040 - OXYGEN SENSOR SIGNALS SWAPPED BANK 1 SENSOR 1/BANK 2 SENSOR 1 - DTC CHART

Description: The heated oxygen sensor (HO2S) monitor determines if the universal HO2S signal response for a fuel shift corresponds to the correct engine bank. This DTC sets when there is no response from the universal HO2S being tested.
Possible Causes: Crossed universal HO2S harness connectors Crossed universal HO2S wiring at the harness connectors Crossed universal HO2S wiring at the PCM connectors
Diagnostic Aids: Connect the universal HO2S connector to the correct bank.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to Pinpoint Test DZ .