- May 28, 2013
Wondering if anyone has experience with the following:
DMC FW: Phase B OverTemp Fault
Vehicle won't "turn on"
DMC FW: Phase B OverTemp Fault
Vehicle won't "turn on"
I would check the fan inside the PEM, see if it spins up?
That sounds high for the PEM. Mine goes into performance limit mode around 45-50C.
Maybe I'm wrong, but this is what I was afraid of...
As you sold your Roadster, who's Roadster is this one?
What is it that you were afraid of? A phase B over-temp warning?
Make me think of a movie where the protagonist is concerned of the "critical error: Drive B" and he relates it to all his fears of the species that is the bee!!! (It's a Tom Arnold movie)
Can someone quote normal temperature ranges for City / Highway driving for Motor, PEM and B (whatever that is).
In this case the error says Phase B, not simply "B"
I can only think it is Phase B of the 3 phases (A, B, C) of the PEM, possible the motor.
I have to agree with TOBASH and you also didn't answer his question. I was curious too as who's this Roadster you're working on and thought this was a little odd. Its one thing if you had expert knowledge from a Tesla engineer who can technically back you up from multiple / hundreds of Roadsters that possibly had the same issue, but what your doing is going for a grab bag approach on the forum which you have to understand is not "guaranteed" and also could possibly damage a part if misdirected or carried out incorrectly.
If this is someone elses care who're paying for the work, I hope they clearly understand this and the risks associated with it.
I'm always down for others trying to help others in an honest, moral, and ethical way. But I'm not really sure if the owner of the car understands you don't have any experience with this.
If you had your salvaged car, dug into issues that are similar or could back you up to debug other Roadster problems that are similar in nature, I could justify that. But the way you're addressing the issue it appears you don't understand what's going on in there nor how to properly diagnose it.
But if the original owner clearly understands all of this, that's fine, and could possibly the case.
PEM temp is 61C.
PEM intake ducting and heat-sink was cleaned last month.
When you had the error did it shut the car down or still driveable?
As a forum member, I'm happy to help any owner with any question or problem they may be having with their car. I'm less enthusiastic about helping someone who has complained about and sold their own car, yet seems to be charging someone else for their own expertise. Especially when their expertise seems to be coming here to ask questions.I appreciate your concerns, its amazing how quickly some people will rush to conclusions though. I, honestly, don't think that I owe you or TOBASH an explanation as to who's roadster this is and based on the impression I'm getting from y'all it certainly isn't in my best interest giving you any more information than necessary, it's clear you have a very negative outlook on me. I'm sure there are people out there who you would prefer to limit disclosure to based on experiences (albeit LIMITED) you've had with them.
I'm on the forum from the "collective of tesla owners", I would hope the information they provide is accurate and I think it is, what this means is that I can use this forum as a resource to gather information, I feel that is one of its intentions. If someone asked a question I knew the answer to and/or had an experience with, I'd share it objectively.
It seems that your mission may include some "policing" of the intentions and practices of others whom you don't agree with or perhaps simply threaten the way you believe things should be done. I'll assume you believe any issue with these cars should ultimately be solved and repaired by Tesla, perhaps you are "invested" in them and riding out the stock gains as a happy Tesla fanboy perhaps not, I don't know, but the world is a big place and there is room for different approaches and opinions.
Anyways, while I do appreciate you being a "concerned citizen" I also appreciate my privacy and autonomy, therefore I am choosing not to answer the "charged" (great EV-pun!!!) question yourself and TOBASH are concerned with.
61C is exactly what I had then. You should also get limited power now.. You should clean the PEM better, as it still overheats.
Update: I had hundreds of Phase B errors prior to cleaning, some Phase A errors and a single Phase C error. I haven't seen them again after cleaning (> 10000 kms ago).
Even after pushing the car hard, I can't get the PEM temp over 40C, even on hot days.
As a forum member, I'm happy to help any owner with any question or problem they may be having with their car. I'm less enthusiastic about helping someone who has complained about and sold their own car, yet seems to be charging someone else for their own expertise. Especially when their expertise seems to be coming here to ask questions.
Well, out of courtesy to your enthusiasm I'll just say this: I did not pose this question to the forum in an effort to use the information to provide service on any sort of "paid" arrangement, I'm literally just getting information for a friend. I hope I pass the "judgement" test...
There is no economic gain currently associated with me and this question...