[akras]

After seeing reports of Hellcat theft, I decided to have Ravelco installed. Not exactly cheap, but seems to be a good way to make it more difficult to steal the car (of course, you can still flatbed it).

Anyway, on the first drive from work I got a "Check Engine" light and the P0452 code thrown. Never had any issues with this car whatsoever, and now this... The fuel cap is tight and looks like new.

If Ravelco messed up wires/connections, it is going to be a nightmare to fix...

Any ideas while I'm waiting for a reply from Ravelco?

P.S. The Ravelco installer says that they didn't touch anything related to that system. A coincidence... Well, yeah, I'm sure they didn't touch that system intentionally. I'm less sure about them pinching or shorting something unintentionally... Well, I'll start by getting a new fuel cap, and I'll go from there...

 

[WizzaVTX]

Does become a challenge to "lay blame" where it is suitably convenient when in reality it may be coincidental that these integrally computerized systems just throw us weird stuff when the pcm does not detect responses or voltages in the range that is created.

You did the right thing to contact Ravelco right off. Only time I have had issues was when I tried to start the car after it sitting for like 3 weeks shortly after it was installed and I forgot to plug in the module. threw all sorts or codes at me and then the realization hit me.....derp

 

[akras]

Only time I have had issues was when I tried to start the car after it sitting for like 3 weeks shortly after it was installed and I forgot to plug in the module. threw all sorts or codes at me and then the realization hit me.....derp

I don't think it's supposed to throw a code that won't allow a car to pass an inspection if the owner forgot to use the plug. In fact, they demonstrated how the system works by pulling the plug while the motor was running.

In any case, while the Ravelco Installer's first reaction was "It simply cannot be related to the installation, just a coincidence", this morning I have received a text from them asking to schedule another appointment to "switch one of the Ravelco circuits". After reading what else they say I conclude that different model years may use somewhat different "PCM logic", and that they did something that does not mesh well with the PCM of my car. The good thing is that it looks like they have the documentation and the expertise to figure it out, and intend to rectify the issue. I'll update when an update is available.

 

[Paladin06]

I don't think it's supposed to throw a code that won't allow a car to pass an inspection if the owner forgot to use the plug. In fact, they demonstrated how the system works by pulling the plug while the motor was running.

In any case, while the Ravelco Installer's first reaction was "It simply cannot be related to the installation, just a coincidence", this morning I have received a text from them asking to schedule another appointment to "switch one of the Ravelco circuits". After reading what else they say I conclude that different model years may use somewhat different "PCM logic", and that they did something that does not mesh well with the PCM of my car. The good thing is that it looks like they have the documentation and the expertise to figure it out, and intend to rectify the issue. I'll update when an update is available.

Have you tried resetting it?

 

[akras]

Have you tried resetting it?

No. Even if it helped, it wouldn't be the proper operation of the system. So I'll leave it to them to figure it out. The driveability of the car is not affected by this code, so I can use it in the meanwhile.

 

[Paladin06]

No. Even if it helped, it wouldn't be the proper operation of the system. So I'll leave it to them to figure it out. The driveability of the car is not affected by this code, so I can use it in the meanwhile.

Believe it or not the dealership will do the same thing so....

 

[akras]

Believe it or not the dealership will do the same thing so....

Clear the code? To have it reappear some time after an attempt to start the car without the plug? I'll let Ravelco fix it the right way.

BTW, I cannot image what kind of fun it would be to try to figure it out at the dealership (who doesn't know what exactly Ravelco did)...

 

[Parshooter]

So what is the P0452 code? I have had no problems since my Ravelco was installed.

 

[OldMoparGuy]

Emissions bs I believe.

 

[Octanewide]

Emissions bs I believe.

Tony is correct..

P0452 stands for “Evaporative Control System Pressure Sensor Low Input.” This code is set by the car’s primary computer (often referred to as the powertrain control module or PCM) when the EVAP sensor detects changes in pressure that are below specification. The PCM will trigger a P0452 when the sensor signal falls below a certain threshold for a specific amount of time.

Sent from my SM-G781V using Tapatalk

 

[akras]

P0452 stands for “Evaporative Control System Pressure Sensor Low Input.” This code is set by the car’s primary computer (often referred to as the powertrain control module or PCM) when the EVAP sensor detects changes in pressure that are below specification. The PCM will trigger a P0452 when the sensor signal falls below a certain threshold for a specific amount of time.

This is a generic description. More specific is below:

If you read it, you are going to see a reference to a timer. My installation of Ravelco shuts PCM off when the plug is pulled, this stops the shutdown sequence before its completion. After two cycles this generates the P0452 fault.

Again, this is for my specific installation. Yours (if it works properly) is most likely different. In any case, this should be easy to rectify.

 

[akras]

Update: they (Ravelco) have fixed the issue using information above. So all is good.

 

[775Cat]

Good deal, I'm getting mine down to Vegas to get one installed as soon as I get a break in work. They seem like a great group of people that really know their stuff. Getting my F450 done also

 

[HDwrenchTX]

had my ravelco installed 2 days ago. works fine.

 

[Linda's Hell Cat]

Check put this thread @fnkychkn doesnt come around much anymore.

But his info was always great!

Please help with P0452 error code

hi, my engine check light turns on from time to time and diagnostics says it is P0452. Could you tell me what exactly it is and what could couse it?

www.hellcat.org

Linda

 

[akras]

Update: they (Ravelco) have fixed the issue using information above. So all is good.

Well, that was premature... Still getting the error code. I guess I will be in touch with Ravelco again. This gets a bit tiresome.

 

[andyoudontstop]

Well, that was premature... Still getting the error code. I guess I will be in touch with Ravelco again. This gets a bit tiresome.

Hi Akras,

Did you ever get this resolved ?

 

[akras]

Did you ever get this resolved ?

No. I learned to live with it. I know what causes it and how to avoid this from happening. The Ravelco can't fix it, apparently. They say it's the first time they see this issue.

 

[Ivory15Cat]

Having installed my own Ravelco following their directions, the emission is never touched. Your problem is in now way related to the installation of or the Ravelco in any way. It’s something else causing it.

 

[andyoudontstop]

No. I learned to live with it. I know what causes it and how to avoid this from happening. The Ravelco can't fix it, apparently. They say it's the first time they see this issue.

What is the cause for the code in your car? I’m gonna get a Ravelco soon and I want to make sure they don’t create any problems.
Thanks.