Well...it happened again. This is after putting another 5K on the odometer and after they replaced the fuel filler neck @ 2900 miles I'm starting to question the reliability of Acura as a brand if this is a reoccurring issue even after taking it to a dealership TWICE for this same issue. I'll keep you posted on what the dealership does.
Do you top off when you fill up? Sorry if this has been addressed before but that has been an issue with caplets fuel systems from the beginning.
I have reset it 4 or 5 times. Tried different gas . Have tried tunes with Ktuner and ran stock. All instances the code returned. Of course this is without the repair done. But the above post mentioning it returning after the fix doesn't make me feel any better.
Did you have the repair done on it? Codes point to a evap leak which maybe that stupid capless fill neck. I have noticed when filling it up that it seems cheap and flimsy and wonder if just hanging the pump on to it when filling is stressing and cracking somwthing. From photos the new CTR doesn't have this which is good.
From everything we’ve seen regarding this issue I think it’s one of 3 scenarios that trigger this code.So I got it back. Dealer had to make their own tool to install. They think it was a seal issue and could have been an assembly issue at the factory. Only time will tell if it's truly fixed.
1) Factory defect on the install causing a leak between the neck and tank. A new neck/tank as I believe they are one piece, installed correctly would permanently fix this.
2) The weak capless filler piece is stressed by the pump itself and cracks causing a leak. Same fix as #1.
3) The neck has two doors. One above that you push with the gas nozzle and one at the bottom. They open together. If you pump and pull out right away, both doors close and some fuel gets caught in the excessively long neck. Because it’s capless, there is a sensor in the inlet area to detect fumes that would represent a leak. Fuel stuck in the neck would simulate this.
Over filling would also cause this same thing. When it stops pumping the first time. I push the flap on the pump housing as if I hung it back up. Pull the trigger (nothing comes out bc the pump stopped) and count to 10. Then pull it out. The fix is to push the top door for a few seconds and clear the code.
So for rb2490 I think you had some fuel trapped in the neck. I think bad gas caused the fuel trim issue but wasn’t related to the cel.
For integra23 I believe you had an actual leak that should be fixed.
And for azreal, not to be insulting, but it seems likely this is caused by you with #2. Your filling habits probably cracked the neck of the replacement just like you did the first time. A defect wouldn’t take 5k miles to show up.
We just have to be careful when filling unfortunately. It takes a couple extra minutes of care that we shouldn’t have to worry about but alas, we do.