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

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

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.