P2237 KIA – HO2S Pumping Current Circuit/Open Bank 1 Sensor 1

 

P2237: DIY Repairing Video Tutorial

https://youtu.be/ERhb8yeut_8

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

 

P2237 KIA Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light)  

P2237 KIA Possible Causes

  Faulty Heated Oxygen Sensor Bank 1 Sensor 1,Heated Oxygen Sensor Bank 1 Sensor 1 harness is open or shorted,Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection  

P2237 KIA Description

  The linear O2 sensor is mounted on the front side of the Catalytic Converter (warm-up catalytic converter) or in the front exhaust pipe. It detects a wide range of air/fuel ratios in the exhaust gas from the rich to lean regions. This linear O2 sensor produces a current that corresponds to a specific air/fuel ratio. The Engine Control Module (ECM) monitors this signal and determines whether the air/fuel mixture is rich or lean. The ECM constantly monitors the linear O2 sensor and increases or decreases the fuel injection duration using this signal. This is called closed-loop fuel control operation.