NOx Sensor Heater Control Circuit/Open Bank 1 Sensor 1

Where it lives

For P2205, the sensor sits on the circuit this code reports. The description of P2205 puts it on bank 1.

Check these first

• An open in the bank 1 sensor 1 NOx heater control wire
• A blown fuse feeding the bank 1 sensor 1 NOx heater
• A failed bank 1 sensor 1 NOx heater element
• A driver fault in the ECM for the bank 1 sensor 1 NOx heater

What to do next

1. Read bank 1 sensor 1 NOx heater status on a scan tool
2. Test the bank 1 sensor 1 NOx heater control wire for continuity
3. Check the NOx heater fuse and power feed
4. Measure the bank 1 sensor 1 NOx heater element resistance
5. Replace the bank 1 sensor 1 NOx sensor if the heater circuit tests good
6. Clear the code and retest

Look up another code