HOW TO FIX P0546 OBD II ERROR CODE - Exhaust Gas Temp Sensor High Input

Code P0546 indicates your Exhaust Gas Temperature Sensor on Bank 1 Sensor 1 is sending a high voltage signal, which usually means the computer thinks the temperature is impossibly low due to an open circuit. This sensor is vital for protecting your catalytic converter and maintaining proper emissions. We explain the function of the EGT sensor and how it changes resistance with heat. You will learn how to locate the sensor on your exhaust pipe and inspect the connector for the corrosion that typically causes this issue. We also show you how to test the sensor with an ohmmeter and a heat source to see if it is responding correctly. Whether it is a broken wire, a bad sensor, or an issue with an aftermarket exhaust setup, this video helps you understand the circuit and clear that check engine light.

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