Hi , I have a 2010 Toyota Prius 172,000 miles with the ennocar Chinese hybrid batteries replacement cells installed. The Chinese cells have been in the car for a year and a half and currently getting 55+ mpg in city driving. Got the error code P0B3D twice about two months apart. On the Dr Prius app cell 4 has a resistance number of 30, is the error code related to the high resistance number?
According to the repair manual (more info), that code means a battery block voltage is being sensed as less than 2.5 volts. Because that's a completely unbelievable voltage for a battery block, the code is generally not telling you about a problem with a battery block. It's telling you about a problem with the wiring and circuitry used to sense the battery block voltage. It's most likely the kind of problem that will not be hard to spot when looking at the connections. As the manual also points out, "Values smaller than 2.0 V may not be shown in the Data List because a fail-safe value is substituted." So looking at the voltage bars in Dr. Prius will not necessarily show you the real reading that's being reported by your code.
Thank you for your response. I was just seeing if the high resistance number in cell 4 might be the issue with the code I'm getting. I'll check wiring.
Just to keep names of things consistent: battery has 14 blocks, that's 28 modules (each block is two modules), or 168 cells (each module is six cells, so each block is twelve cells). Dr. Prius is showing the voltages of blocks, It is not able to drill down to the module or cell level.
I have the Chinese cylindrical battery cells and it has 14 modules unlike the original ones which has 28 modules.
Thanks, I had skimmed over that The only thing that really changes there, though, is that the 'module' is now the same as a 'block' (and is made of twelve cells). There are still 14 blocks, and those are still the level at which the ECU monitors voltages.
I have the same, the batteries are treated the same way... If you have the tools and knowledge you need to disassemble the pack, individually inspect (visually and voltage / capacity) double check the bus bars for damage, clean every contact surface, torque the bolts down to 4.8 foot pounds, make sure they are aligned WELL before torquing down the packs.. you are going to have to balance the packs after you verify they aren't damaged or memory faulted.. I balanced my newpriusbatteries.com pack 2 weeks ago after I did a full rebuild of my new to me 2013, the pack is over 2 years and 50K+ miles old out of my 2007, and they were only .15v out of balance. I balanced my pack for 3 days at 15.80 volts in my house for temperature control..
I I have removed the battery and checked connections and torqued the cell bolts. I didn't check voltage but may have to. Thank you for your response.
I ended up sanding down a tiny bit and brake cleaning the bus bars even though they were new, had some kind of manufacturing oil on there that was giving me some greif..
