Fuel System Monitor Puzzle Deciphering the Code Behind Its Unwillingness

This condition can be achieved by letting the car to sit overnight. The ignition key must not be left ON position before the cold start. ... the drive cycle to set the OBDII system to show ready. ... The monitors I could not reset were the Oxygen Sense, Cat Monitor, and EGR system ... Wife's Patriot O2 and fuel monitors were not ready for E Check. Tried Chrysler general drive cycle and specific O2 sensor drive cycle and still not ready. 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 ... 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 ... All emissions readiness monitors are set, except the O2 sensor monitor. Both catalyst and O2 heater monitors are set. They won't even test it for emissions ... Here's some info on the EVAP readiness monitor, courtesy of NY State. ... The EVAP system monitor allows the PCM to test the integrity of the fuel ... Continues to fail with 3 monitors "Not Ready": Fuel System, Catalyst, and Oxygen Sensor Heater. Previous Jeep tech advised to drive for 55mph ... If you miss any of the marks, the cycle will end and you'll have to start all over. One of the mistakes I made was not maintaining the proper ... A vehicle is not ready (and cannot pass a compliance test) if it has not had enough operation since the OBD memory was last cleared (also known as a “code clear ...