Fuel System Monitor's Readiness Mystery Unraveling the Complexity

Now, switch the rear defroster and ac off and keep the speed of your vehicle at 90 km/hr (55MPH) nearly for 3 minutes. During this period, the purge and Fuel ... 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 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, ... ##Idle the vehicle for 2-3 minutes. This executes the O2S Heater, Misfire, Secondary AIR, Fuel Trim, and Purge system monitors. ##Drive the ... 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 ... When mclarensf hooked it up to their computers the error message was basically interpreted to be "bad fuel". That's what they thought it was originally until ... not set on certain flex fuel models. Readiness monitors are disabled for operation if greater than >E10 blends. The monitor will ignore all 11 ... Diagnostic scanner? IIRC, these trucks have Misfire, EVAP, O2, Heated O2, Catalyst, Fuel System, EGR/CMP and I can't remember the last monitor. The "Readiness Monitor" reports. Catalyst: Not Ready Fuel System: Not Ready O2 Sensor: Not Ready O2 Sensor Heater: Not Ready If the Malfunction Indicator Light (MIL) comes on steady for 20 seconds and then blinks for 10 seconds , the I/M (Inspection/Maintenance) test ...