Catalyst Temperature Sensor Circuit Bank 2 Sensor 1

Where it lives

For P0435, the circuit described runs through the sensor. The description of P0435 puts it on bank 2.

Check these first

• A failed catalytic converter temperature sensor on bank 2 sensor 1
• An open or short in the sensor circuit
• Corrosion at the sensor connector
• A bank 2 converter running hot from a rich condition
• An ECM fault on the sensor input

What to do next

1. Read the sensor temperature on a scan tool
2. Check the sensor circuit for an open or short
3. Inspect the sensor connector for corrosion
4. Check fuel trims and misfires on bank 2
5. Replace the sensor if the reading is implausible
6. Clear the code and retest

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