O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 2

Where it lives

For P014B, start at the sensor the description names. The description of P014B puts it on bank 2.

Check these first

• A delayed oxygen sensor on bank 2 sensor 2
• A vacuum or exhaust leak near the sensor
• Resistance in the bank 2 sensor 2 wiring
• A lean condition on bank 2
• Oil or coolant contamination on the sensor

What to do next

1. Watch the lean to rich response time on bank 2 sensor 2
2. Check for vacuum and exhaust leaks
3. Inspect the bank 2 sensor 2 wiring
4. Replace bank 2 sensor 2
5. Check for a lean condition on bank 2
6. Clear the code and retest

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