Fuel System Monitor Mystery Solving the Riddle of Its Unpreparedness

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. 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 ... It failed because of "fuel system not ready " code on their scanner. They gave me 30 days extension and said ride it more often since no check engine light. Issue: You may come upon a vehicle readiness issue in which only the fuel system monitor is not ready. Summary: Beginning with model year 2011, ... Out of curiosity which monitor has not completed? I believe you can tell when a readiness monitors has not completed by watching the CEL and ... Well it happened to me and we had to replace the fuel system. I screwed up and inserted the wrong propellant into the tank and then proceeded to ... Less fuel vaporization at low temps throws off the vapor pressure requirement. In my state TWO monitors can by "not ready" and the OBDII test ... I read a response on a non tech site regarding saturn drive cycles that you must also cold start with the fuel level between 15 to 85 %, and do ... Did you change batteries or disconnect the battery? (main cause of issue). Because if you did it takes a long time to set this monitor to ready. Hello, After driving quite a while and a number of fuelings, the fuel system readiness monitor continues to show not ready for the looming ...