[amidgeha]

O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2

The heated oxygen sensor (HO2S) monitor determines if the HO2S signal response for a fuel shift corresponds to the correct engine bank. The test fails when there is no response from the HO2S being tested.

Cause:
Crossed HO2S harness connectors
Crossed HO2S wiring at the harness connectors
Crossed HO2S wiring at the PCM connectors
Bank 1 Sensor 1 / Bank 2 Sensor 1 harness is open or shorted
Bank 1 Sensor 1 / Bank 2 Sensor 1 circuit connectors (wrong connection)
Faulty Engine Control Module (ECM)

Symptoms:
Check engine light