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Car Forum / Honda Cars / March 2006Question about EVAP system (ODB message)
I have a '99 Accord (4-cyl, 5-speed), and the "Check Engine Light" came on. I had Auto Zone use their ODB diagnostic machine, and got message "P1457," which, according to the Interweb means: "Leak Detected In EVAP Control System" The gentleman at Auto Zone said that usually just meant a loose or faulty gas cap. Can anybody confirm this? It's not that I don't trust the guy at Auto Zone, it's just... OK, that's exactly what it is. Also, is the remedy for this, assuming my gas cap is fine, to simply reset the light? How do I do that? I've heard different things from different people. Thanks in advance. Consider it confirmed. A loose (or more accurately, not properly tightened) gas cap will set off this CEL code. Very common. Other things can set it off, too, but this is one of the first you want to eliminate. Do you have an owner's manual? (I'm not trying to be smart. Some folks buy their Hondas used and don't get an owner's manual with it.) It should say how to reset the CEL, or if it does not, see http://www.tegger.com/hondafaq/faq.html#engelectrical . >I have a '99 Accord (4-cyl, 5-speed), and the "Check Engine Light" came > on. I had Auto Zone use their ODB diagnostic machine, and got message [quoted text clipped - 7 lines] > reset the light? How do I do that? I've heard different things from > different people. > I have a '99 Accord (4-cyl, 5-speed), and the "Check Engine Light" came > on. I had Auto Zone use their ODB diagnostic machine, and got message > "P1457," which, according to the Interweb means: "Leak Detected In EVAP > Control System" The gentleman at Auto Zone said that usually just > meant a loose or faulty gas cap. Can anybody confirm this? It's not yes, i can. > that I don't trust the guy at Auto Zone, it's just... OK, that's > exactly what it is. at least ya arent payin for the advice. > Also, is the remedy for this, assuming my gas cap is fine, to simply > reset the light? How do I do that? I've heard different things from > different people. they shouldve reset the light for you. my scanner has a feature to clear the codes/reset the light. > Thanks in advance. > I have a '99 Accord (4-cyl, 5-speed), and the "Check Engine Light" came > on. I had Auto Zone use their ODB diagnostic machine, and got message [quoted text clipped - 9 lines] > > Thanks in advance. ------------------ The manual says that three 'trips' will reset the light if it's caused by the gas cap (after you correct the fault). That means the engine has to heat up, then cool down three times. 'Curly' > I have a '99 Accord (4-cyl, 5-speed), and the "Check Engine Light" came > on. I had Auto Zone use their ODB diagnostic machine, and got message > "P1457," which, according to the Interweb means: "Leak Detected In EVAP > Control System" The gentleman at Auto Zone said that usually just > meant a loose or faulty gas cap. It's more than likely the gas cap. > Can anybody confirm this? It's not > that I don't trust the guy at Auto Zone, it's just... OK, that's [quoted text clipped - 3 lines] > reset the light? How do I do that? I've heard different things from > different people. Three *complete* warm-ups and cooldowns will reset the light if the error does not recur.  SignatureTeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ Thanks for the tips. Does that mean that if the light doesn't turn off after three trips, it's a recurring problem? > Thanks for the tips. Does that mean that if the light doesn't turn off > after three trips, it's a recurring problem? Then replace the gas cap. SignatureTeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ >> Thanks for the tips. Does that mean that if the light doesn't turn off >> after three trips, it's a recurring problem? > >Then replace the gas cap. there are two codes for evap leaks. they are P01456 and P01457. As a general rule the P01456 code covers from the fuel tank to the cap. The P01457 goes from the tank to the engine, in your case it may be an FTP sensor, two way valve, canister shut valve or purge control solenoid. Good luck with that Chip >>> Thanks for the tips. Does that mean that if the light doesn't turn off >>> after three trips, it's a recurring problem? [quoted text clipped - 6 lines] > an FTP sensor, two way valve, canister shut valve or purge control > solenoid. Chip is right. My own FAQ even says so. I should have checked first before relying on my porous memory. This list: http://www.tegger.com/hondafaq/error_codes.html#enhanced says the P1456/1457 are as follows: * P1456 Evaporative Emissions (EVAP) Control System Leakage (Fuel Tank System) * P1457 Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System) SignatureTeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ Thanks for the clarification. I called the Honda dealer near me, and they said it could be a) the gas cap, b) the EVAP canisters c) gas spillage into the neck of the fuel system. He said to give it as many as 10-12 trips to see if it resets, and if not, then to look into it further. >Thanks for the clarification. I called the Honda dealer near me, and >they said it could be a) the gas cap, b) the EVAP canisters c) gas >spillage into the neck of the fuel system. > >He said to give it as many as 10-12 trips to see if it resets, and if >not, then to look into it further. Have someone actuate the 3 solenoids, the put a smoke machine on it and you'll find it. Chip Man I wish I knew about cars so that would have made sense to me. Thanks for the tip though. (I don't usually make a point of my ignorance, but no sense hiding it.) > Man I wish I knew about cars so that would have made sense to me. > Thanks for the tip though. (I don't usually make a point of my > ignorance, but no sense hiding it.) I think he means that 1) if all 3 solenoids are opened up at the same time (artifically activated), 2) and smoke is deliberately fed into the system under pressure, 3) then where the smoke comes out of is where your leak is. SignatureTeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ Well, this morning I just noticed that the light did not come on. It took a while, but the dealer said it could take 10-12 trips. Plus, most of those "trips" I made were very short, but this weekend I managed to actually drive on the highway, so that might've helped. Just thought I'd post in case anybody stumbles upon this topic sometime later. |
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