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So the car will AC charge now, so it is not an OBC issue.

updating links and edits for easier reading

It appears that the link fo this thread changed, likely due to the forum sw update. So i'm tracking thru some threads that linked to it to clean up the dead links.

@puddnig posted about reading the data using his diy setup from a terminal window. https://myimiev.com/threads/software-to-read-bmu-monitoring-data.4129/#post-46228 A necessary driver was related to the FTDI chip used for serial/USB port. i would guess that is part of the secret sauce...

Have you even done a "regular" calibration charge yet? That is to drive it till down below 2 bars, then plug in to charge and let it go till it's done balancing. (meaning don't use a timer or cut-off, just let it finish on its own)

The 12V battery is my guess also, since it is lead-sulfuric acid based. Hydrogen sulfide may be outgassed by the charging reaction. Need to check the voltage of the battery, and the electrolyte level in the cells, add distilled water to cover the plates if they are exposed to air in the cells.

" ZAAHA3WLDD0100439 " for a 17-digit VIN ?

How does it display--as 10 digits or 17 ?

If it still throws the code, then the rise time may be too slow for some reason? The criteria has both time and voltage elements that must be met after the trigger signal is sent. Did adding the parallel resistor on the op amp solve the problem?

Maybe someone has jumper cables and can try to give you a jump to start?

try pushing the button for recirculate mode, which closes off the outside air intake (likely the source of your airflow)

Well then it might be in the buffer circuit between the Hybrid Output and the microcontroller, or in the ucontroller itself. There is also a CAN data value for the capacitor voltage, this is compared to the HV traction battery pack voltage to determine the precharge condition. How do you know...

If the HV value reported by the CAN buss for the MCU capacitor does not match within about 6 volts or so, to the traction battery pack voltage, then the code will be thrown. Another way to "raise" the apparent capacitor voltage might be to change a resistor in the voltage divider ladder circuit...

Indeed it is a little different, thanks for posting about this. i can see very similar locations of components that do the same functions, so the pcb evolved from 2009 to the 2012 version. With a totally different hybrid board design it is highly likely that most of the work done in this...

1k words:

Typically the car thinks it is charging too slowly--which is the reason that it throws the P1A15 DTC code. The voltage doesn't reach the expected level in the expected time frame. A defective hybrid board outputs a lower voltage due to some degraded component (capacitor or transformer or...

Who could argue with such rational logic? :ROFLMAO: Your understanding of how these cars operate would be greatly improved by reading the technical information section of the service manual.

What year, make and model of electric car?

Howdy @amonera and welcome to the forum, Have you seen the thread about the laef OBC? https://myimiev.com/threads/harvest-the-leaves-nissan-laef-ze0-obc-thread.4436/post-39855

Yes we can tell, because voltage is not the same thing as power. An education is an expensive luxury--either thru tuition to university, or thru the school of hard knocks. Please take a look at the inventions of others on the diy electric car forum to see if your idea is feasible...