Review on 🔍 Denso 234 4732 Oxygen Sensor: Reliable and Precise Automotive Oxygen Sensor by Eric Wright

code p0240 after installing an aftermarket exhaust (WRX fit) on my Subaru Impreza rs 05. The dealer told me I "most likely" need a front O2 so I have changed the front O2 themselves because they put strain on the arm and leg. It did not work. they are, but it was 2k+) After looking at my own answers and installing a washer in my rear O2 (didn't work), I decided to go ahead and replace my rear O2. Installed without spacers and driven over 1000 km. FYI ** I don't know much about cars, only recently started learning about them.