2004 with ~280K and the second HV battery. So we get a P0A80 but can clear it. When it is active, the dash is lit up, battery fan on high, and throttle response is bad. Clear the code and all is right with the world. The engineer in me (ChemE, not EE) wants to look at the data logged with TorquePro and figure if there is a block that is driving this or is the whole HV battery toast. My son is already to give up and buy a new car (since used are more expensive). Any way with the ODB data to help us determine if this is worth saving? Any specialty wreckers out there for Prius that will pick up in Albuquerque? Data was collected driving around town up to 55-ish with hills. Engine olny stops running at red lights.
I can't zoom in enough with my old eyes on the images.....however from what I can see block 11,13??? 3rd chart reading left to right. are bad... This could be a good project for taking apart and testing and replacing each modules....but if you love this car and want to get it running. buy a new hybrid battery $2,200 for Project Lithium but they are not currently in stock. can around to your local dealerships....ask for pricing.
The P0A80 code will trigger, but not put the car into limp mode. The next opportunity, when the car determines which block is faulty will trigger the code that specifies which block is causing the problems. You're resetting the codes before giving the car a chance to help you. The block specific code makes it pretty easy, but sometimes there is more than just that one weak block. The graphs you're providing, at first glimpse are overly detailed and complicated. (as usually happens when career engineers are involved ) There are simple apps available like Hybrid Assistant that will allow graphing the HV battery block voltages while using the AC system as a load, making it very, very easy to see which blocks are the weak links, since they will drop out much faster than a healthy block. Perhaps you can do a static load test using your current app, instead of graphing while driving, which hides a lot of problems since the car is charging the HV battery. Warm the car up completely, park the car leaving it in "ready". The HV battery SOC should be in the 60-65 % range or higher (the display should be all blue bars or blue and one green). The engine should turn off. Start your data recording, set the AC to its lowest temperature so it maxes out. This can draw up to 16 amps from the HV battery, depending on outside temperature. Somewhere around 42% SOC (the display will show 2 purple bars) the engine will turn on to recharge the HV battery. If the battery is weak enough, near the end of the test, the bad module may be dropping so fast that it codes out before the engine starts. The graphs will tell the tale. Look at Post #5 in this thread. It shows what a bad block looks like when dropping rapidly. I think there are other graphs in the thread that show weak modules and well balanced modules. The graph in Post 5 does show that the other 13 blocks are relatively well balanced, as they all deplete relatively evenly (at least up to the point of this module's failure). If all 28 modules were exactly identical, the graph would look like a single line. The blocks that have a lot of divergence from the average are either stronger or weaker. Provides a very easy to look at visual aid for understanding the battery being tested. Just Another HV Battery Thread and Experiments | PriusChat
