DavidBo

Fresh after the 3 year warranty expired I got my first check engine light; it popped up on the first start of the day, not while driving. The scanner showed a historic fault of P0499, which is one of the ever-popular evap system codes. I did a close visual of the vent and purge solenoids, wiring looked OK and there was nothing obviously wrong, so I'll have to do a deeper dive. I did quite a bit of research and I figured out the basic troubleshooting using a 12VDC battery and a multimeter, but I'd like to know which valve is the usual culprit for this code so I know where to start. I only got the P0499 code, not the more common P0449. Also, I tried clearing the code with my scanner, but the CEL never turned off. I've cleared plenty of codes in the past and the light always went off at least for a little while, but not this time. I'll be pulling the negative battery cable for troubleshooting, I'll see what that does. Side note: I tried removing the intake plenum from the throttle body, usually a simple procedure but for some reason the bracket on the passenger side above the alternator wouldn't let go. I had the hose disconnected, but even after some healthy pulling it wouldn't come loose. There's no fastener, it's just a pressure fit. Do I need to use more force? Thanks in advance for any input.

Thanks for the tip! I just placed my order, best price I could find.