P0549 - Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 1)

The ECM detected a high-input fault in the exhaust gas temperature sensor circuit on bank 2 sensor 1.

Code Overview

The ECM detected a high-input fault in the exhaust gas temperature sensor circuit on bank 2 sensor 1.

Common Causes

• Failed exhaust gas temperature sensor
• Short to voltage in the circuit
• Heat-damaged wiring or connector near the exhaust

Diagnostic Steps

1. Inspect the sensor connector and wiring near the exhaust
2. Compare temperature data to actual operating conditions
3. Check for harness damage or poor connector fit

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

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Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.