Dtc P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 1)

The exhaust gas temperature sensors are installed before and after the DPF catalytic converter and before the CCo catalytic converter to sense the exhaust gas temperature.


A thermistor built into the sensor changes its resistance value according to the exhaust gas temperature. The lower the exhaust gas temperature, the higher the thermistor resistance value. The higher the exhaust gas temperature, the lower the thermistor resistance value.

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