goni
New Member
Posts: 45
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Post by goni on Mar 24, 2021 21:24:17 GMT
Hello , i started to get a fault in Gateway "P30DE00 voltage drop.via generator line too large" , its intermittent and by the time that occured it happened when i started the car after being parked outside the whole day in 0C. Is it battery related ? If sb had similar fault i hope you can help .
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Post by dv52 (Australia) on Mar 24, 2021 21:56:09 GMT
goni : hmm.........are you sure the fault message isn't "P30DE00 voltage drop.via generator LIN too large"?
The Gateway module (it's called "J533") controls the Alternator(Generator) voltage via a communications facility called "LIN". Here's the CAN network schematic for this relationship:
I suspect given the weather conditions that the battery capacity was compromised at the time - doesn't necessarily mean a bad battery, but might be prudent to keep an eye on it (I reckon)
Don
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goni
New Member
Posts: 45
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Post by goni on Mar 24, 2021 23:01:20 GMT
It actually says "line", but i don't know how to attach a screenshot. Anyways thank you for your answer . Regards  Edit:guess i found it |
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Post by syafiqfox on Nov 30, 2021 13:35:09 GMT
Hi, im having the same fault. Fault re appear randomly, 1-2 days after it was clear. By any chance you found the cause and rectify the fault?
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Post by jrzinho on Dec 8, 2021 18:48:36 GMT
I'm Brazilian and around here I haven't found any solution.
My car gets heavy driving
start stop error
Fan does not pass speed 3
It rarely gives warning of low battery and keyless error. Very rarely.
I already changed the negative cable, the one that goes to the battery pole.
Alternator.
I already replaced the battery, for an original one.
And I've already cleared all grounds, ends and nothing.
And every time I try to resolve it is necessary to disconnect the terminals. This resets q causes the problem to take a long time to reappear.
Has a friend already solved this problem and could inform the diagnosis?
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Post by jrzinho on Dec 8, 2021 18:51:10 GMT
goni : hmm ... você tem certeza de que a mensagem de falha não é "queda de tensão P30DE00.via geradorLINmuito grande"?
O módulo Gateway (denominado "J533") controla a tensão do Alternador (Gerador) por meio de um recurso de comunicação denominado "LIN". Aqui está o esquema da rede CAN para este relacionamento:
Suspeito que, dadas as condições climáticas, a capacidade da bateria foi comprometida na época - não significa necessariamente uma bateria ruim, mas pode ser prudente ficar de olho nela (eu acho)
vestir
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Post by dv52 (Australia) on Dec 8, 2021 21:26:17 GMT
jrzinho : hi. Most of your work appears to be concentrated on earthing. Maybe the problem is on the other end of the battery - perhaps check connections and cable integrity on the SA fuse box generally and in particular on SA1 which is the cable to CX1 (alternator)
Also the Battery Terminal Recognition - open circuit error suggests that it might be prudent to check the cable from the battery positive to the SA fuse-box (it's not shown on my picture - but you should be able to easily trace the cable from the battery +ve terminal
Don  |
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Post by jrzinho on Dec 9, 2021 17:24:13 GMT
I will check.
Have you ever had a similar case that was resolved?
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Post by jrzinho on Dec 9, 2021 19:30:15 GMT
Because it's a grounding problem, wouldn't it be okay if the problem is always happening?
Because every time I disconnect the battery terminal, it's as if a reset happened and the problem took a while to appear.
Sometimes I suspect it's a problem in the battery/power management module
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Post by dv52 (Australia) on Dec 9, 2021 20:00:10 GMT
jrzinho : No, I've never seen your particular group of errors appear together - I'm purely guessing as to the cause!! No, a grounding problem doesn't necessarily mean that the fault is always happening - I've seen lots of earth faults that are intermittent. It really depends on why the earth cable is faulty. Sometimes (often?) the earth connection is loose, or rust/detritus in the connection causes an intermittent fault like yours. Again I'm guessing, but if you are referring to the battery monitor control module (the module that sits on the negative battery terminal), I don't think the problem is caused by this device. This nodule's sole role in the car's Energy Management System is to provide data about the battery. I've seen lots of cars where the owner has removed the connection to this module to disable the Stat Stop function - it doesn't produce your errors Don
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Post by jrzinho on Dec 10, 2021 17:14:36 GMT
I understand.
About the negative cable, I already changed it and it didn't solve it, so I already discard it after your testimony.
I also checked the SA cais as you indicated and the cables were intact, I even checked with the presence of a mechanic, but I did the cleaning anyway. Now it's time to wait to know if the problem has been solved, and when I try to solve something related to this, I need to disconnect the battery terminals and this causes a reset in the modules and the problem takes a while to appear, after a repair dent the error happens later 600 miles travelled.
Would there be any component that you would like to replace?
Remembering that I have already changed the negative cable and alternator.
I already replaced the battery, for an original one.
And I've already cleared all the grounds, which I thought was ground.
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Post by dv52 (Australia) on Dec 10, 2021 21:46:02 GMT
hmm....... no, I don't have any further suggestions - intermittent faults like these are very difficult to fix because of their transient nature
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Post by yaseen on Nov 21, 2024 10:51:41 GMT
Good Day,
I have also been having the exact same issues lately on my 2015 GTI, have you manged to resolve this?
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