Why Is My Fuel System Monitor Not Ready? A Troubleshooting Guide

But normally the evap drive cycle to complete you need more than 1/4 tank of gas but not more than 3/4 tank of gas, it must sit over night, and ... 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 ... You have to do a couple "drive cycles" to get all the monitors to read "ready". ... 20 minutes of stop-and-go driving with at least four 30-second ... Evap is a part of the fuel system. If the evap tests are off. The fuel system monitor will never set. And neither will the catalyst. You ... 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. Short answer. Get a VAG capable scan tool and check your fuel trims. If your fuel trims are high, you will have to figure out why. Most likely it's the drive cycle, a lot of people have found that it takes much longer than the expected cycle to get everything to set, because ... I paid them to reflash the system as that was the known remedy for the “fuel system monitor not ready” issue. It fixed the issue, but now o2 ... If only the fuel system monitor is not ready, you may want to try the following short generic drive cycle (not vehicle-specific) that DEP ... Reconnect in the reverse ( red then black) after 20 minutes. Attach your obd 2 scanner and initially almost all monitors are incomplete. What I ...