CEL P0456

[whitefrs]

Originally Posted by 86_ZN6

do you have this CEL? are you with FI?

Got this and p0068
Full blown kit

[86_ZN6]

Originally Posted by whitefrs

Got this and p0068
Full blown kit

yup this only happens with FI.

so far 3 of us

one with the vortech SC

[whitefrs]

Originally Posted by 86_ZN6

yup this only happens with FI.

so far 3 of us

one with the vortech SC

any fix?

[86_ZN6]

Originally Posted by whitefrs

any fix?

none at the moment. still trying to figure it out

[whitefrs]

Originally Posted by 86_ZN6

none at the moment. still trying to figure it out

i Heard that they can just be disabled

[86_ZN6]

Originally Posted by whitefrs

i Heard that they can just be disabled

You can clear the code. But comes back every 3 engine starts

[whitefrs]

Originally Posted by 86_ZN6

You can clear the code. But comes back every 3 engine starts

im not saying clear but disable like it wont pop up again

[86_ZN6]

Originally Posted by whitefrs

im not saying clear but disable like it wont pop up again

maybe through ecutek yes.

[Cessblood]

Originally Posted by 86_ZN6

Anyone get P0451 codes?

I got the same code. Any updates? Did you fix yet?

[86_ZN6]

Originally Posted by Cessblood

I got the same code. Any updates? Did you fix yet?

No. I Just left it as is for now.

[Cessblood]

Okay.

[difuxionx]

Wanted to share my case. I have beenreading from the forum here for a while and decided to register today. I haveread a lot of bashing on the threads but I have found a lot of usefulinformation as well. I am commenting here because I also have the P0451check engine code.



Ihave been doing many tests during this weekend trying to figure out what iscausing this code.



Ihave basically taken apart and changed all the Vortech kit hoses and vacuumlines. I had an oil catch can and I removed it during the testing, just incase. I verified all connections checking for boost leaks or vacuum leaks. Ihad changed the BOV/Discharge valve for an HKS SSQV and I removed it and triedthe stock plastic valve. The gas tank CAP trick does not work; I tested it justin case.



Ihave done so many test I did not know what else I could do except remove theVortech kit itself

Whichtook me to the point of placing the stock MAP sensor and flashing my previousNA ROM back since I had ECUTEK before I had the Vortech Kit. THIS ACTUALLYWORKED AND THE ERROR NO LONGER APPEARED. After many test the car is workingwith the stock MAP and the Tuned NA Flash I had before the Vortech kit. Thistells me it should not actually be a mechanical issue.

IFlashed the new Vortech base tune with the stock MAP sensor installed and I gotthe check engine light again which eliminates the MAP as the problem. I believethere is something happening on our cars with the Vortech base tune that doesnot affect all users. Maybe something that is different in our cars that doesnot allow the standard "base" Vortech kit tune to work correctly.

I amadding this information in an effort to help tuners find what is causing theissue. I am using the same Vortech base tune many others are using and theydon’t have the issue but for me it does not work correctly and I get the checkengine light (same for you guys for what I read here). I have read about 3people with this error here and now 4 with me and I have heard of 2 moreelsewhere which means it is not an uncommon error as I was thinking at first. Ithought I was the only one getting this error but a bit of research gave memore insight on others and what they have tried.

Theonly thing I know is that it does not seem to be a mechanical issue. I hopethis helps tuners find what is causing it or a way to maybe change the ECUTEKMap so it ignores the cause of the error maybe and hopefully fixing thesymptoms.

Theseare the symptoms I am getting when the check engine light is activated:

*thecar always works in automatic mode in Drive or in Manual it shifts by itself Iheard when the car gets a check engine it adopts some security measures causingthis

*thecar is always set to sport mode even when it is turned off most likely causedby the security feature as well

*thecar gets a bit “jumpy” low in the power band. I get this when the check enginelight is off as well but it is worst when the check engine light is on

*WORSTOF ALL the car is wasting too much fuel almost double it normally uses when thecheck engine light is on. I was expecting more fuel consumption because of FIbut this is ridiculous getting aprox. 10 to 12 MPG



Whenyou reset the codes the car seems to go back to normal. Fuel MPG is average 14not so good but not as bad as when the light come on. The code stays off until3 or 4 starts later specially on cold starts. Seems erasing the codes quicklywhen the light appears helps the issue a bit but it would be nice if someoneactually found the cause so it can be eliminated totally or at least find a wayto bypass the code with the ECUTEK software...









The other errors I have read about are:

P0068 -Throttle Position Sensor Inconsistent with the Mass Air Flow Sensor (PossibleBoost/Vacuum leak)
P0108- MAP Pressure Circuit High Input (MAP sensor related error)

[Cal3000]

I just got the P0451 code today. Any more info on this?

[Carwhisperer]

Mine hasn't come back on since I OPd