P0546 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P0546 – Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 1

 

P0546: DIY Repairing Video Tutorial

https://youtu.be/0zZbQdz8fLc

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P0546 Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light)  

P0546 Possible Causes

  Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1,Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted,Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection,Exhaust leaks,Excessive particulate matter buildup on sensor  

P0546 Description

  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 P0546 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.