P2237 ACURA – Rear Air/Fuel Ratio Sensor Bank 1 Sensor 1 IP Line High Voltage

 

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 ACURA Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),High Fuel Consumption,Excessive Smoke from Exhaust  

P2237 ACURA Possible Causes

  Air/Fuel Ratio Sensor Bank 1 harness is open or shorted,Air/Fuel Ratio Sensor Bank 1 circuit poor electrical connection,Faulty Air/Fuel Ratio Sensor Bank 1,Inappropriate fuel pressure,Faulty fuel injectors,Intake air leaks may be faulty,Exhaust gas leaks  

P2237 ACURA Description

  The rear air/fuel ratio (A/F) sensor (bank 1, sensor 1) is installed in the exhaust manifold and detects oxygen content in the exhaust gas. The rear A/F sensor transmits output voltage to the powertrain control module (PCM). The PCM controls fuel injection duration by comparing the target air/fuel ratio with the rear A/F sensor signal. The sensor includes the VS cell, the pump cell, the atmospheric reference cavity, the diffusion layer, and the heater, and it enables overall feedback control.