wajo22

Two weeks ago on my way to work, my gas cap error light came up. I took it out, cleaned it, and tightened it back in. But the message wouldn't disappear. So I did a reset by removing one of the battery poles, just as recommended here by a few threads.

Today, again on my way to work, the check engine light came on, so I went to Autozone for a quick scan, and they came up with code P0497 (Evaporative Emission (EVAP) System Low Purge Flow).

Could this problem be related to the gas cap error i received two weeks ago? I was thinking I should replace cap before I do anything else.

Project_CLean

iTrader: (2)

It could be. But it could also be a failing solenoid in the EVAP system.

I would also replace the cap and then clear the light before getting into the EVAP-E issues.

wajo22

How do I clear the light after putting the new gas cap?

Project_CLean

iTrader: (2)

You're gonna need an OBD scanner. Autozone will scan your codes for FREE, but they aren't allowed to clear the check engine light because it's "unlawful" . But, if you have any friends at the store or anyone with access to one. I'm sure they won't mind.

If not, you can get a cheap scanner for $50 at autozone.
or order a $25 from amazon that connects with your car by the OBD port, then wirelessly to your phone with an app called "Torque" that you can download for $5. Then, you can clear it as you please.

flyromeo3

Im not sure if Acura's have something called a " leak detection pump " but I had this problem with my s4. Thought it was the gas cap, and at the end it was the leak detection pump that failed.

wajo22

Well, I bought and installed an OEM gas cap, and reset the ecu by disconnecting the battery.The CEL is now off. I hope it doesn't come back. Thanks for your help.

3rdGenHybrid

You need to run an Evap test to properly diagnose it. Any Honda/Acura dealer an do it. But it takes knowledge and some understanding of the system to perform the test and diagnose it. Most "dealers" will tell you, you need a new canister vent solenoid,canister and pure solenoid. Very unlikely you need all of it. The system is split into 2 sections. The fuel tank area and the canister area. Improper readings in either area will cause a check engine light and either a small/large leak in either system, even if a leak is not present. Good luck with your findings though.