Decoding the Fuel System Monitor Puzzle Uncovering Reasons for Inactivity

Fuel system normally completes almost instantly after startup, even if the battery was disconnected. If it doesn't it could be because a parameter is out of ... 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 ... You might have a tune. I had an issue with OBD readiness on another car that was tuned and needed to remove the tune for smog. Some codes can prevent the continuous monitor of Fuel System (runs at startup) should be ready unless some code prevents it. No O2, Evap or fuel codes per GAP ... 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 ... The fuel level being empty, and now full, may have a lot to do with your troubles. Once it gets down to around 3/4 tank, I'd start watching the ... This test is done automatically in the middle of the night, when it is not being driven, after the engine has fully cooled down, and it repeats ... If the Malfunction Indicator Light (MIL) comes on steady for 20 seconds and then blinks for 10 seconds , the I/M (Inspection/Maintenance) test ... Issue #1: -After doing the driving sequence for 3 times, everything was ready, but FUE (Fuel System) monitor was not ready. ... Issue #2: - ... Every vehicle made after 1996 has to have an OBD2 system built in and that system will have various emissions monitors that signify when it ...