Fuel System Monitor Not Responding? Uncover the Hidden Causes

B. Fuel System Monitor ... The following conditions must be met: ... Fuel level above 1/4 tank. ... Battery condition fair or above, i.e. 11v-14v. ... Idle-up or PTO ... It failed fuel system readiness because the JB4 is manipulating the fuel rail pressure, so it isn't passing readiness. Take the JB4 off, clear codes, drive it ... Right. I have been to a few of these rodeos. Usually fuel monitor is the first to complete, then the cat and O2 are usually taking their time. ... fuel system monitor not ready.” I've also done tons of research and spoken to the dealer service rep. It's getting really frustrating and I ... BUT i went to complete a drive cycle after the codes were cleared and i checked after 100 miles and the evap and fuel system are not ready. this ... The PCM has a software routine called the Diagnostic Executive that schedules, runs, suspends "monitor tests". Several conditions will suspend - ... Hello, After driving quite a while and a number of fuelings, the fuel system readiness monitor continues to show not ready for the looming ... I can have that one show not ready. Fuel system must show ready to pass smog.I have replaced the fuel cap, battery, fresh fuel multiple times, ... The fuel system monitor allows the PCM to evaluate how close the fuel control system can regulate the fuel mixture in attempting to achieve an optimum air/fuel ... If your oxygen sensor monitor isn't working, this video is for you! We'll show you how to fix the O2 sensor monitor not ready problem, ...