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