P0391 HYUNDAI – Camshaft Position Sensor ‘B’ Circuit Range/Performance Bank 2

 

P0391: DIY Repairing Video Tutorial

https://youtu.be/Uu0INZwG6BQ

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

 

P0391 HYUNDAI Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),Lack/Loss of Power,Engine Stall  

P0391 HYUNDAI Possible Causes

  Faulty Camshaft Position Sensor,Camshaft Position Sensor harness is open or shorted,Camshaft Position Sensor circuit poor electrical connection,Faulty Engine Control Module (ECM)  

P0391 HYUNDAI Description

  The Camshaft Position Sensor (CMPS) is a sensor that detects the compression Top Dead Center (TDC) of the NO. 1 cylinder. The CMPS consists of a hall type sensor and a target on the end of the intake camshaft. When the target triggers the sensor, the sensor voltage is 5V. If not, the sensor voltage is 0V. These CMPS signal is sent to the Engine Control Module (ECM) and the ECM uses the CMPS signal for synchronizing the firing of sequential fuel injectors.