Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1

Where it lives

For P2081, the sensor sits on the circuit this code reports. The description of P2081 puts it on bank 1.

Check these first

• A loose bank 1 sensor 1 exhaust gas temperature sensor connector
• Intermittent chafing on the sensor harness
• A failing sensor that drops signal at times
• A poor sensor ground that loses contact when hot

What to do next

1. Read bank 1 sensor 1 exhaust gas temperature while wiggling the harness
2. Inspect the sensor connector for loose or corroded pins
3. Test the sensor circuit for intermittent opens
4. Check the sensor ground for a voltage drop when hot
5. Replace the bank 1 sensor 1 exhaust gas temperature sensor if the fault repeats
6. Clear the code and retest

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