Technical Definition:
Oxygen (O2) Sensor Signals Swapped (Bank 1 – Sensor 1) / (Bank 2 – Sensor 1)
Trouble Code: P0040
Address: 0x0040
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Address: 0x0040
System: Powertrain
Subsystem: Fuel & Air metering, Auxiliary emission controls
Technical Description:
Possible Causes:
Possible Symptoms:
O2 Sensor Signals Swapped Bank 1 Sensor 1/Bank 2 Sensor 1
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– HO2S Bank 1 and 2 Sensor 1 harness is open or shorted
– HO2S Bank 1 and 2 Sensor 1 circuit connectors (wrong connection)
– Faulty Engine Control Module (ECM)