One of the greatest metal bands on earth have a few stories to tell. From high school meet-ups to music festivals around the world, Avenged Sevenfold have done it all, remaining one of only a handful of bands that manage to essentially remain as their original lineup despite so much forward momentum.
This is because OBD II standards require O2 sensor PID voltage to be displayed in a range between zero and 1 volt. Newer vehicles will have accurate air fuel sensor voltages. * In generic OBD II what you often see is a percentage of true voltage.
Diagnosis is as follows: 1  Disconnect vacuum hose and connect a vacuum gauge to it. 2  If there's no change in vacuum reading, FIND OUT WHY (cracked hose, malfunctioning baro read solenoid...). 3  With engine running, measure reference power supply -- it should be very close to 5.0 volts.  Measure output signal voltage.