O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 2

Where it lives

For P22BA, the sensor sits on the circuit this code reports. The description of P22BA puts it on bank 2.

Check these first

• A bank 2 sensor 2 positive current wire shorted to voltage
• An open positive current control circuit
• A failed wideband oxygen sensor
• Faulty ECM current control

What to do next

1. Read bank 2 sensor 2 positive current on a scan tool
2. Test the positive current wire for a short to voltage
3. Check the positive current control circuit for an open
4. Measure the wideband sensor current control
5. Replace the bank 2 sensor 2 oxygen sensor if the circuit tests good
6. Clear the code and retest

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