Fuel System Monitor Quandary Navigating the Labyrinth of Its Unresponsiveness

I went to have the truck inspected and initially it failed emissions because the NOX/SCR Monitor and Exhaust Gas Sensor were listed as not ready. 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 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. Is Your Evap system not ready? Want to pass the emission test successfully? Learn about the importance of the Evap screen and how to ensure ... Make sure the gas cap is tight and you have about 1/2 tank gas. In most cases, just this monitor not being ready should not cause an inspection ... A drive cycle starts on cold start and engine has reach normal operating temp. and system goes into Closed Loop. At this stage all sensors are ... Why is my EVAP monitor not ready? ... Your EVAP monitor may not be ready due to incomplete drive cycles, unresolved system issues, or faulty ... The "Readiness Monitor" reports. Catalyst: Not Ready Fuel System: Not Ready O2 Sensor: Not Ready O2 Sensor Heater: Not Ready Incomplete or not ready meaning the test is not completed. It means that the OBD2 system has not been able to run this routine or it has failed. OBD Auto ... Its possible they are not fully passing, yet are not fully failing that monitor test. Sometimes it is not even the sensor itself, but a circuit related issue, ...