I have 2003 Prius That Has P3191 P3060 Codes and won’t reset I had the battery replaced only once by a company that went out of business it was Prius hybrid repair in Annapolis MD back in 2014 Back When I had P3006 P3028 Codes in 2014 any ideas how have to fix P3191 P3060? It Had Miles 188K Miles Back In 2014 When The Battery Was Replaced And Now It Has 380,899 Miles.
It would appear that you have two separate issues here! For the P3191, take a look at this: Try cleaning it with MAF Cleaner (Only! Accept no substitutes!) before you go to the expense of buying a new one. For the P3060, look at this thread: 02 with p3060 code. Temperature | PriusChat
Well generally the fan running in the back and a generation one or two means something is a miss or the battery ECU thinks something is amiss in that area or in some area and it has the fan on because it thinks it's possible that the battery might be getting very warm or something of that nature generally when this happens in any of the four generations that I have and I start looking under the hood of the battery I see the problem very quickly corrosion frosting on the nuts you know sometimes leaks in between middle rack modules. Things like that and then you're on an adventure to clean up and sort out the battery don't forget the battery control ECU the orange plug all of that your battery ECU may be different than mine but a similar process I would imagine making sure it's clean the receptacle has all the pins in it that sort of thing the stuff goes a long way in your journey
The second link in post #3 for the P3060 code is a good one to read. The description for the P3060 code is described in post #6 of that thread. The first link in post #3 is not a very good resource for the P3191 code. The description of the P3191 code is "Engine does not Start". There are many things that may cause the engine not to start. The mass air flow (MAF) sensor is only one of the many things to check when the engine does not start. So my question is, does your car start, and are you able to drive the car? PS: Please use punctuation in your posts. It makes it much easier to read.
OP hears the fan running in the back (presumably that's the HV battery vent fan), implying that the engine runs. I wonder whether the engine control module was ever replaced, because early on there was an issue with delayed starting (especially in cold temperature conditions) and there was a factory recall issued which involved installation of an upgraded ECU. So it could be that, but with nearly 200K miles on his replacement HV battery, and the fan running, that strongly suggests to me that there's an HV battery issue involved here. In my 23+ years of ownership of my '02, I don't remember the HV vent fan ever running except maybe one or two times when the HV battery was failing. (BTW, when that fan runs, you hear it! There's no mistaking it for anything else.) In any case, we need more diagnostics in order to help OP. Sub-codes for the DTCs would provide more specific guidance than we can give "over the phone," as it were.
My fan comes on in the back driving the car normally but not on high like it is on in his car now I never hear my fan in the back running either unless I leave the car running and get out of the car and go where the vent is in the backseat and listen then I can hear it on medium and low which is what it's usually running on because I always have the air conditioning on I don't have any battery heating problems I don't run the crap out of the car or any of that sometimes we go a little fast but generally we have the air conditioning on and that battery is getting a nice flow of very reasonable air running across it.
What is the condition of your 12V battery? If it's toast, it won't boot the hybrid system and the HV battery can't start the car. Are any other warning signs displayed on the dash, besides the red triangle? If the battery symbol is lit, you have HV battery problems. I strongly suspect that HV battery because of the high mileage reported in your original post (almost 200K miles). I think it's probably time for another HV battery. Have a competent mechanic pull all the codes and sub-codes and report back here for more ideas.
The P3101 code is also for the engine failed to start. P3101 is detected by the hybrid control ECU. The P3191 code is detected by the engine control ECU. So your car is going into Ready, and the engine cranks for 10 to 30 seconds and then stops. Is this correct? So, you need to tackle the engine no start before you deal with the P3060 code. These are two separate problems. There are many things to check when the engine fails to start. I would start by cleaning the MAF sensor and clean the throttle body and then go from there. Take a look at this link which might help, Gen I Prius Crank No-Start Presents a Challenge - Transmission Digest
Cleaning the MAF sensor was my first suggestion at the top of this thread. Easy to do, by removing the sensor and spritzing it thoroughly with dedicated MAF cleaner (only! I used CRC brand); allow to dry, re-install. The throttle body is a bit more work: the engine air intake filter box should be removed to allow easy access to the throttle body. Perform this cleaning while the MAF sensor is removed. Do a search for "throttle body cleaning" and you'll get a few hits on youtube that will show you how to proceed.
