They turn and adapt to the steering wheel direction and help you corner successfully. Asked jan 5, 2017 by scott. Web what does stft b1s2 mean? Web stft is the direct result of the feedback that the oxygen or air/fuel ratio sensors are providing to the pcm. Web srf in subaru means steering responsive fog lights. Web also, the post cat o2 should be almost rock steady if the cat is functioning correctly. Web stft's between two banks are almost identical and are almost always positive, meaning ecu is adjusting for a lean condition. The ecu's basically telling you that the catalytic. Most likely the scan tool you. The 1.75 is the difference between the.
The 1.75 is the difference between the. Web if the upstream sensor (b1s1) and the downstream sensor (b1s2) are both cycling identically (or nearly so) that means that catalytic convert is toast and you're going. Those are the catalyst monitors see where it says b1 s2 that means bank 1 sensor 2 you want to see a high % there as it shows no unburned fuel. If it's switching at all, it's likely the cat isn't doing it's job. Web to enable the correct air/fuel ratio, (stoichiometry = 14.7:1), the system uses stft to keep the system as close as possible to this figure. #3 ยท oct 26, 2015. 3.1% for some reason when selecting stft b2 on my scanning device, it displays the above (99.2%) which. They turn and adapt to the steering wheel direction and help you corner successfully. Web stft is the direct result of the feedback that the oxygen or air/fuel ratio sensors are providing to the pcm. Stft is known as a volatile value. Asked jan 5, 2017 by scott.
