P0271 BMW – Fuel Injector Cylinder 4 Activation

 

P0271: DIY Repairing Video Tutorial

https://youtu.be/CJAQmrk4h0c

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

 

P0271 BMW Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),Engine Misfire,Engine Run Rough,Low MPG  

P0271 BMW Possible Causes

  Dirty Fuel Injector 4,Faulty Fuel Injector 4,Plugged Fuel Injector 4,Fuel injector 4 harness is open or shorted,Fuel injector 4 circuit poor electrical connection  

P0271 BMW Description

  Code P0271 is triggered when the Engine Control Module (ECM) detects a high voltage in the Fuel Injector 4 Circuit. During normal conditions, the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.