Fuel System Monitor Diagnostics Pinpointing the Cause of Its Unreadiness

To allow your vehicle's monitors to perform their tests and reset them to a "ready" state, your vehicle will have to be driven in a special way called a "drive ... 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 ... In order to get the OBDII system to set the monitors to "Ready," the vehicle needs to be driven through a drive cycle/drive trace. If you don't ... If only the fuel system monitor is not ready, you may want to try the following short generic drive cycle (not vehicle-specific) that DEP ... Why is my EVAP monitor not ready? ... Your EVAP monitor may not be ready due to incomplete drive cycles, unresolved system issues, or faulty ... 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 ... For instance, the catalyst monitor will rely on the air fuel ratio sensor and oxygen sensor for it's test routine. If you check the air fuel ratio sensor test ... ... 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 ... ... not ready" state, usually the Evap System, and pass smog. If you have a continuous monitor out of ready, even if it's the only one, you fail. Ensure the fuel level is between 1/4 and 3/4 tank · Park the car for over 10.5 hours (typically left overnight). Must be between 40-113°F ambient ...