Broken cap or the wrong cap for the vehicle. leak check monitor (ELCM) similar to the Toyota key-off vacuum pump system. EVAP Monitor Not Ready The EVAP (Evaporative Emission Control System)monitor checks for fuel vapor leaks (including a loose or missing gas cap). You might need to check the hose system, vent O-rings, the leak detection pump, among others, Here is a complete list of the most common EVAP leak causes: Missing or loose gas cap. So, there you have it, car is tuned, problem is solved and all is right with the world. The evolution of evaporative emissions systems has been driven by changes in. Of course, my evap system monitor hasn't set to "ready" yet, but that can take hundreds of miles to get there, and only if you're lucky! I have the updated drive cycle from Subaru, so once I'm completely done with my e-tune, I'll give it a go. Well, as luck would have it, from the first map, my problems were solved. He said he'd toggle off just what I needed for my particular mod list, Stage 1 with EGR and TGV deletes, and we could move on from there if that didn't solve my problem. What he told me was that many tuners, himself included, toggle off a standard number of CEL codes in their base maps, regardless of your mods or stage, as a sort of template for their tuning. I went with another reputable tuner and we discussed some of the potential issues that could be a likely culprit. I'm thinking I'm going to have to see the dealer, which is a nightmare in itself.SCĪs it turns out, it was the tune that was causing my readiness monitors to stay in the red. Furthermore, every other person I've corresponded with who has an EGR delete does not have this problem. Cobb and several other tuners felt it was from my EGR delete, but that is now back in the car and working.still no joy. If you have a continuous monitor out of ready, even if it's the only one, you fail. You can have one monitor in a "not ready" state, usually the Evap System, and pass smog. Per everything I've read from my state DMV's requirements and the EPA's, it's either good or you've got an issue. That is considered a "continuous monitor" and does not require drive cycles to reach readiness. My biggest concern is the Fuel System Readiness monitor. a google search will give you a number of driving behaviors to try. There's a bunch of driving procedures you need to do before it can be ready, if you're just swapping tunes it will never be ready because that resets the ECU which resets the readiness monitors.
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