2000 Camry CEL P0440

2000 Camry - 4 cyl - 188,000 miles
CEL came on while interstate driving. No noticeable difference in performance. Had the code read, and got the 440 code that nearly everyone I read or speak to says "change your gas cap". The one I had was an aftermarket, and was about 2 years old. Purchased another aftermarket that seems a little better quality. Now I need to reset the CEL.
Is there a way via a sequence of steps to reset the code without a code reader/reset device? I own a Nissan Pathfinder, and I can both read the flashing CEL and reset the errors using a sequence of ignition, accelerator depressions, all within precise time allotments, etc.
Does Toyota offer that for the 2000 Camry.
I have searched the entire forum and cannot find info regarding this.
Thanks in advance for your responses...
Mike

Pull the ECM fuse for a couple of seconds.

Well, I was thinking I was trying that yesterday by pulling the fuse labeled "ECU-B", which is the only fuse I'm finding that hints at the ECM. However, the repair manual shows one diagram of the ECM and an ABS ECU under the dash. So, I'm a little confused and not sure I'm pulling the correct one.
Anyway, I left it out for about 10 seconds, but nothing changed. However, I'm not sure whether I should be turning on the ignition with that fuse out - any hints on that?
thanks again...

ABS-ECU is not the right fuse. The ECU fuse is in the box next to the battery.

I found what I believe is all the fuses, but none had what sounded like ECU. So, I chose the "disconnect negative battery cable" route, and the light did go out. Once I get out for some highway driving I'll find out whether the gas cap was really the issue.

thanks
Mike

I get this one a couple of times a year I just reset the code and put a thin coat of oil on the gas cap gasket. Been doing this for around 2 years now.

Thanks - that's a good tip. I finally had to remove the negative battery cable to reset the code, and so far has not come back. But I did replace the gas cap previously. Hopefully its in the past now. I'll remember the idea on the gasket, though.

Thanks - that's a good tip. I finally had to remove the negative battery cable to reset the code, and so far has not come back. But I did replace the gas cap previously. Hopefully its in the past now. I'll remember the idea on the gasket, though.


I used a code reader to reset the codes. I like to at least look at them first.

Me too. I had the Autozone guy reset mine - haven't invested in a reader yet, since my Pathfinder gives me the ability to "read" the codes using a blinking SES light. Its crude, but works well. Then I reset them...

I firmly believe in resetting a code and waiting for the same to appear before attempting repairs. It is good that you found a store that will reset your codes as not all will do this. If you do your own work a code meter is a worthwhile investment.

I firmly believe in resetting a code and waiting for the same to appear before attempting repairs.

i've been following that procedure for a number of years now... having the same code re-appear just confirms that there's a problem in the circuit/sensor

good thing i live close to an autozone that does it for free
:2cents:

Take note that many codes are delayed by two-trip detection logic.