DTC P2278: Oxygen Sensor Signals Swapped - Bank 1, Sensor 3/Bank 2, Sensor 3
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P2278 - OXYGEN SENSOR SIGNALS SWAPPED - BANK 1, SENSOR 3/BANK 2, SENSOR 3
| Description: | 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 a response from the HO2S being tested is not indicated. | ||
| Possible Causes: |
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| Diagnostic Aids: | Connect the HO2S connector to the correct bank. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | GO to H: Fuel Control STEP H60. | - |