HO2S Sensor Correlation Bank 1 Sensor 1/Bank 1 Sensor 2

Where it lives

For P00D5, the part to look at first is the sensor named here. The description of P00D5 puts it on bank 1.

Check these first

• A lazy upstream oxygen sensor on bank 1
• A failed downstream oxygen sensor on bank 1
• An exhaust leak between the two bank 1 sensors
• Corroded wiring on a bank 1 oxygen sensor
• A rich or lean condition skewing one of the sensors

What to do next

1. Compare bank 1 sensor 1 and sensor 2 signals on a scan tool
2. Check for exhaust leaks between the two sensors
3. Inspect the bank 1 oxygen sensor connectors and wiring
4. Replace the sensor that reads off
5. Verify fuel trim is within range
6. Clear the code and retest

Look up another code