[Eddie25]

i plugged in my obd2 plug. as expected my one oxygen sensor (left bank) is not functioning correctly. its not so bad as to activate check engine light but it does not cycle properly like the other one.

however on the obd2 app it shows my car having 2 fuel trims. the one cycles correctly but the other one just flatlines at like 80 or something and does not move or spike or anything. im a bit clueless when it comes to this stuff. is the fuel trim a sensor that can be replaced? the car does have poor economy recently. or will replacing the o2 sensor fix it? why 2 fuel trims?