CEL CODE 41 INJECTORS 1g

[booosting92tsi]

I've been reading over most of the posts on here about the CEL CODE 41, to my best understanding if INDEED WITHOUT A SHADOW OF A DOUBT, it's one of your injectors that are triggering the CEL CODE 41, would that only happen if they are hot? or if is INDEED the injector, would it also happen when cold?

would that also apply for the coil pack and the resistor pack? do these packs only malfunction when the engine and injectors are hot? in other words they operate fine when cold even if they are almost at the end of their life?

 

[viprez586]

It doesn't matter when it fails, it just matter that it failed. Sensors can fail at any given moment and its pointless to discover "when" it's most likely to fail.
More so people look at why it failed : stuck open, shorted, clogged shut,etc.

Your getting a CEL code for injector so remove the injector pigtail one by one to figure out which one is bad.
You can find a set of 450cc injectors on here for under $60 shipped anyway.

If your not having a problem with your coil pack - don't touch it. They're fine well over 400hp so no you don't need to "upgrade it"

 

[booosting92tsi]

It doesn't matter when it fails, it just matter that it failed. Sensors can fail at any given moment and its pointless to discover "when" it's most likely to fail.
More so people look at why it failed : stuck open, shorted, clogged shut,etc.

Your getting a CEL code for injector so remove the injector pigtail one by one to figure out which one is bad.
You can find a set of 450cc injectors on here for under $60 shipped anyway.

If your not having a problem with your coil pack - don't touch it. They're fine well over 400hp so no you don't need to "upgrade it"

Everything you said is all good and correct, and all common knowledge, I already knew that...but you still failed to answer my questions... It's not a matter of when???...you need to re-read my questions, I think you took it out of context! Can you please address the resistor pack? just answer the questions with a simple "yes" or "no". Thanks for any other input!

 

[hhuricane]

He answered your question. It can happen anytime. The computer is seeing that an injector isn't firing. It doesn't know or care at what temperature it is. It can happen cold or hot or any temp in between.

 

[booosting92tsi]

He answered your question. It can happen anytime. The computer is seeing that an injector isn't firing. It doesn't know or care at what temperature it is. It can happen cold or hot or any temp in between.

Great, cool thanks, The reason I asked was due to the fact that there are a lot of misconceptions on this forum on the CEL CODE 41. A lot of people have stated here that it only happens to them when is hot, but when running the engine cold everything would be normal! So you can see where I am coming from and all the confusion!

So my question is then, why does it only happen to some people when the engine is hot?

 

[hhuricane]

Because electronics tend to dislike heat more than cold. Take a look at your computer and the fans in it. Excessive heat=bad. Cool electronics tend to last longer. Failing electronics tend to heat up due to inefficiency. It can be a sign of a failing component. As the engine heats up it makes it harder for the components to shed the heat and so they fail.

 

[viprez586]

He answered your question. It can happen anytime. The computer is seeing that an injector isn't firing. It doesn't know or care at what temperature it is. It can happen cold or hot or any temp in between.

Thank you. Pretty sure I read your question correctly.

Like stated, If I had to pick - hot. Why? Think of the windings in a solenoid. When the solenoid is operated at lets say 90-100% duty cycle -it's working hard. This causes heat. Windings don't like heat - get a thin piece of metal hot enough - it melts.
Lets just say for a hypothetical situation - the windings get hot and create an open circuit or a break in the wiring. The car cools down and the windings contract thus making contact again - next time it gets warm enough the wire breaks again.
Remember these windings are very tightly woven with close tolerances.

Food for thought - rapid/ continuous hot/cold cycles put stress on everything that experiences that temperature change, when it chooses to break is entirely up to just how much more stress it can with-take.

Put in some injectors and call it a day, who cares about the coil pack or resistor pack unless there's something wrong with it. Throwing multiple parts at a car to "fix" it, is a waste of time and money. Doesn't say much for "diagnosing" properly either that way too.

Just because a couple of people experience an issue when it's hot and runs fine when it's cold - needs to be properly diagnosed, not every car is the same. Troubleshooting only your car will fix it.

 

[donniekak]

Other circuit troubles beside the injectors themselves, will trigger a code 41. Pretty much any problem in the mpi circuit under the hood can cause a code 41.