CEL after over filling tank, anyone else?

[Cancunbadlands]

Would if I could, it won't delete! I've run the tank down to the zero point.

What software are you using?
Stop at the nearest Auto Zone and ask them to delete the code

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[Msradke]

Code p0451 is the fuel tank pressure improper reading. If the code does not clear the fault is still present . Would suspect failed fuel tank pressure sensor. If you have over filled many times sensor could have been damaged by liquid fuel. You need to read the sensor voltage with a scan tool and compare to proper pid data.

 

[dochawk]

Stop at the nearest Auto Zone and sk them to delete the code

As stupid as this sounds, an auto zone in Tucson told me that this was illegal, and that they could only read them.

Uhm, then how am I supposed to know if replacing the EGR worked?

I've never heard such nonsense in CA or NV, and now have my own.

 

[Speed2000]

I try and fill up at a pump where pavement is sloped and fill up on the high side so less likely to trap air in the tank.

 

[HeyBales]

Would if I could, it won't delete! I've run the tank down to the zero point.

AutoZone, Advanced, O'Reilley's, ect.

They'll all do a free scan in the hopes of selling you a part - and will clear a trouble-code.
Just like any $20 scan tool could do.
Obviously it could come back - meaning it wasn't a temp condition.

ETA - just saw DocHawk's comment - makes sense.
In which case, time to buy your own!

 

[Carlitos_92]

ETA - just saw DocHawk's comment - makes sense.
In which case, time to buy your own!

Can’t see his comment, but yes. @Charlie Daubitz an OBDII scanner is an essential tool these days. I have a $60 Bosch, but just about any brand/price level will shed light on “check engine” lights as well as clear the codes causing them.

 

[Chops]

IMO life is too short for that boring grandma stuff…

Lol - don’t tell that to The Little Old Lady from Pasadena…
Go Granny, Go Granny, Go Granny Go!

edit….Bless Her Soul

 

[dochawk]

ETA - just saw DocHawk's comment - makes sense.
In which case, time to buy your own!

yeah, that was actually in what had been my father's '98 F-150.

And then the gas incident happened, and I had to buy one. I just left it in, and could tap in the reset sequence by braille as I drove.

[I hand-pumped the fuel out of my ETC to make it easier to drop the tank, and my brain slipped on how old it was. I didn't even look, thinking it was from a couple of months before. And then I poured straight from the opaque can into the F-150. Which objected within a few miles. We pumped it back out, and, well, that fuel would have been a lovely color for a barrel aged bourbon, but for gasoline . . . On the bright side, its next task was for a nephew to learn to drive. Anything more than a light throttle when cold throws the CEL--a perfect snitch for a new driver!]

 

[Automan21]

Once that pump handle clicks stop don’t top off. You will ruin ur charcoal canister, that’s when your CEL comes on. Happend to me on a different car.

 

[Gamma500]

Once that pump handle clicks stop don’t top off. You will ruin ur charcoal canister, that’s when your CEL comes on. Happend to me on a different car.

Has happened to me on past vehicles as well. Huge annoyance having to kill codes. What is the point of forcing more fuel in? Trying to get to the nearest dollar amount? Think you can go another day without fueling based on the extra 2 ounces jammed in? Fill it till it clicks, you’re full, it’s over, move on.

 

[Charlie Daubitz]

What software are you using?
Stop at the nearest Auto Zone and ask them to delete the code

I have a Bosch like this

, Autozone and O'Reilly won't reset any codes, my Bosch won't reset this CEL. I only overfilled it once.

 

[HeyBales]

I have a Bosch like this

, Autozone and O'Reilly won't reset any codes, my Bosch won't reset this CEL. I only overfilled it once.

Oh, so a sub-ecu unit code.

Forscan Lite has let me reset codes for the ACCM complaining about not reaching whatever ECU it failed with. I think I had an ACM one like that too once, and reset it.
Both of those didn't turn on the money light though, so without noticing it in Forscan Lite in the 1st place, wouldn't have tried to reset it.

I figured a decent OBD2 adapter, bluetooth in this case, that could be used in any vehicle, and the $7 for Forscan, or any other decent apps from free to $10 for other vehicles - was worth the money.

Used it on a few friends vehicles - just not sure which other app to buy to use in those cases, Car Scanner looking decent.

 

[Automan21]

If you drive it enough the vapor canister will eventually dry out if any fuel got in there. That was my issue. I used to constantly over fill my WRX. Got the CEL for some kind of canister some crap and I wound up crawling under the car. Unplugged the air and vapor hoses and had a fan blowing over them to dry out the canister.
It worked cuz after a day of doing that cel went away and I stopped topping off

 

[FischAutoTechGarten]

It's true... when it clicks... stop...

Now that said... allot of automotive reviewers will do things like... OKay... I got the click... I'll count 30 seconds... then I'll put in more until I get the click again.. Then I'll stop... they do that for gas mileage checks... but they shouldn't... They're teaching the viewers bad habits. Todays systems don't want you going past that click.

 

[Charlie Daubitz]

That CEL was unrelated to over filling, The stealership just informed me the hose plastic fitting broke off the canister. Their replacing the canister, not under warranty? what happened to the emissions warranty that was for a long time a while back?

Then AI search gave me this:

• "Topping off" fuel: A common cause of EVAP system damage is overfilling the gas tank past the first click of the pump nozzle. This can force liquid fuel into the charcoal canister, which is designed only to handle vapor. This degrades the canister and can cause it to fail prematurely.

and this:

• Weak plastic fittings: The quick-connect plastic nipples on the canister and related fuel lines are prone to cracking or breaking under strain. Over time, the tension from the connected hoses combined with vehicle movement can stress the plastic, leading to failure.

It may be related to the unsupported line on the canister stressing the plastic fitting. I can't really see a plastic canister designed to be connected to the fuel tank be affected badly by gasoline? Maybe the weight of the hose with gas in it caused the fitting to break off?

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