Evap system monitor1/17/2024 ![]() You may want to complete the drive cycle 2-3 times. To insure all monitors are complete use a scan tool to view the monitors. ACCELERATE: Go ahead and accelerate again at 3/4 throttle until 55-60mph is reached. After city driving, 3 minutes of highway driving at 53-60 MPH sets EVAP Small Leak Monitor to READY. The ECU will once again self-test the EGR System, EVAP Purge System and Long Term Fuel Trims. ![]() Driving the car on city streets for 6 minutes 30-35 MPH with 5 FULL STOP and GO sets EGR-BPT and Evap Purge Flow Monitors. Driving the car on a highway for 10 minutes 53-60 MPH sets EGR, O2 Sensors and Catalyst to READY state. Start the car and let it idle for 2 minutes (open loop, O2 sensors not being used by ECU) and once the coolant temp reaches 158F/70C, the O2 Sensor Heater is set in READY state (the ECU will start using the O2 sensors - closed loop). Fuel tank pressure monitor (19 model) The EVAP control system is a system which utilizes the intake manifold vacuum to draw the evaporative emissions into the intake manifold and mix then in with the intake air. This is what I used that I found through Google. EVAP Monitor Introduction Two EVAP systems have been used since 1998. Stop vehicle and idle engine for 4 minutes. Drive 5 min at steady speed between 30 and 60 mph. ![]() Evaporative Monitor (EVAP): Prerequisite: No trouble codes present, Fuel tank between 1/4 and 3/4 full. What is the correct method of getting the car to run the evap system tests on an '02 Altima V6? Evaporative Emission Control (EVAP) System 101: The Basics - In The Garage with Understand the basics of the Evaporative Emission Control (EVAP) System and how it works with this helpful article. Chevy runs their EGR monitor during the deceleration portion of the drive cycle. monitors for correct EVAP system operation. monitors electronic EVAP components for irrationally high or low voltages. If a test has been completed, the system status will be reported 'ready.' An uncompleted test will be reported 'not ready.' An OBDII vehicle will not pass the annual inspection unless the required monitors are. The EVAP system monitor: is a self-test strategy within the PCM which tests the integrity of the EVAP system. I've Googled what the steps supposedly are and got the cat, EGR and O2 monitor ready with the 53-60 driving, but I don't seem to be able to get the Evap system ready. The readiness monitors identify whether the vehicle's computer has completed the required 'tests' while the vehicle is being driven. If the EVAP I/M System Status indicator displays NO turn OFF the ignition for 17 hours, ensure that the vehicle meets the conditions for a cold start, and repeat steps 12-18 six more times, or until the EVAP I/M System Status indicator transitions to YES. The garage apparently doesn't do the drive to complete all the monitors and tells me to bring it back once its ready (don't go there) for the emissions test. All of the I/M System Status indicators should display YES. I recently had some work done in hopes of getting the SES light off and getting my emissions sticker.
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