P0547 Code - Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

What Does P0547 Mean?

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P0547 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

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What are the common causes of P0547 ?

The exhaust gas temperature (EGT) sensor is located in the exhaust stream, and sends input voltage readings to the PCM. When system voltage is outside of factory parameters, it will cause a code to be stored, illuminating the malfunction indicator lamp (MIL).

Loose, broken, burned or corroded wiring/terminals/connectors are commonly at fault. Other causes may include an internal short in the sensor, a ground short in the sensor, a failed sensor , a severe exhaust leak from the sensor or an aftermarket exhaust system that lowers exhaust back pressure.



How do you troubleshoot P0547 ?

The engine system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the P0547 code solenoid valve to control oil pressure to the engine mechanism that is installed in the valve system to switch valve timing between Low and High.If the engine solenoid valve has an open or short circuit, a DTC is stored.

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