![]() When the monitors are completed, you are ready to go to the smog station. 0.040 EVAP Monitor Operation: DTCs P0455 - EVAP System Leak Detected (large leak) P0457 - EVAP System Leak Detected (fuel cap loose/off) P0442 - EVAP System Leak Detected (small leak) (0. Idle for 5 minutes, then shut the engine and leave the vehicle off for 10 minutes. The vehicle is hot soaked to simulate the car being run, parked and allowed to cool. The EPA tests these systems by putting a car in a sealed chamber. Repeat idle and acceleration to 30-40 mph five times. To understand how any EVAP system in a Honda or other vehicle works, you have to know how the EPA tests for evaporative emissions. Smoothly accelerate and maintain a speed between 30 to 40 mph Smoothly accelerate and maintain a speed above 25 mph for 2 minutes. Smoothly accelerate and maintain a speed between 30 to 45 mph for 2 minutes.įrom 6-8 hours of the vehicle being off (cold soak), idle for 5 minutesĭrive in city traffic naturally with stops and acceleration for 5 minutes. ![]() Trace 1: Standard Type – Make sure that your fuel level is between 50% and 85% full. With that said, you do need to worry about the EVAP monitor. Also on some vehicles, if your fuel tank is always above 3/4 tank, the EVAP monitor will not complete. Yes, it is possible that there is an issue with the EVAP or another system that is preventing that monitor from completing. Conditions causing un-stable idle will prevent this monitor from running. For most vehicles, the EVAP monitor is last to complete. Note: This monitor evaluates EGR flow based on a change of engine roughness (idle stability). > A/C clutch, PS Switch and Cooling fans do not change state (turn off).ġ) Idle vehicle for five (5) minutes (to reach closed loop operation).Ģ) Drive with a steady vehicle speed between 40 & 60 mph for 2 minutes. > No misfire temporary (pending) or matured fault present. > Engine must have run at least 90 secondsġ) Idle vehicle for five minutes (to reach closed loop operation).Ģ) Drive with a steady vehicle speed between 30 and 45 mph for 2 minutes.ĮGR System Monitor Drive Trace – Vacuum controlledĢ) Drive with a steady vehicle speed between 40 & 60 mph for 8 minutes.ĮGR System Monitor Drive Trace – Electronic > Fuel level is between 15% and 85% full. Note: Due to the limited preconditions provided with this drive trace, NCVECS recommends using the monitor specific drive traces for Chrysler vehicles. > Cold start (Note: cold start temperature is undefined)ġ) Warm engine up for five minutes (must reach closed loop)Ģ) Drive (with steady throttle) at a speed between 40 and 60 mph for 8 minutes.Ĥ) Drive (with steady throttle) at a speed above 20 mph for 2 minutes.ĥ) Turn key off, leave off for ten minutes (to run O2 sensor heater monitor). ![]() For all drive cycles, make sure the check engine light (MIL) is off. ![]()
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