2001 prius code p3001

You are right.so sorry . I just tried it. sorry for the big mix up..... My ready light does NOT come on till I hit start.. AGAIN MY BAD.....

 

I am sorry,no the battery only shows 12 volt or so with the key on engine off. I just have the next test in mind that I got from " alldata" It says to find the problem to unhook the 2 power cables from the battery to invertor and than turn key on and check codes. Will try that and update...thanks again

 

If I run that test, the minute I turn the key on not start, the light comes on. I than pull the code and get the codes I posted in the 1st part of my post. If I try to erase the code with the key on"obviously key needs to be on" the code will appear within a second. If I try to erase the code with the car running it will slow the engine down and just die. That seems to indicate problem with the battery pack,but when I pulled that pack and put it in a different 01 prius it performed as it should. I am not able to work on it today,but hope to have some time on Sat.

 

YEEESSSSSSS,the problem has been found. It is a bad transmission.For some reason all the lights would come on as soon as I turned the key on. Rechecked the codes and found p3140 which is the safety interlock feature. that is the only one that will come on till you shift the transmission from neutral to park and than the codes p3009 and code p3000 and p3001 appear. Some how I did not reset my autoenginuity and it kept showing the same codes till I learned how to unhook and re hook the code function and now it will show the codes that indicate its the transmission.Now the next step is to find a good transmission...

 

Yeah ,I tried it 3 times. The codes would not appear till I put it in drive or park..It did not matter if it was drive or park, either one would set the code. The thing that thru me off was that the minute I turned the key on the triangle of death would appear and I could not get it to go away,ever.. For some reason the code p3140 did not always appear and some times it indicated that there were no codes,but the triangle of death was always lit..I still am not sure why the code 3140 shows up because I put that back together but that I will tackle another day after the trans. gets replaced. I just chalked it up to operator error,because I just got the Autoenginuity a few days prior to this..So to make a long story short I am not sure why it worked the way it did but the last 3 times I tried it the p3001 and p3009 would only appear when I went to drive or park.. I am not the best at typing clear pictures ,but if you have any questions about what I tried or did send me a message and I will give you my phone number..Thanks again for all your help...

 

Okay follow up on this car,did I mention I bought it at from an a garage that worked on it and could not find what was wrong with it? Any how its a project car so its taking me some time to get to it. I fixed the code 3140 "iTHINK THATS WHAT IT WAS' . The garage had taken off the cap on the side of the invertor where the MG1 motor wires come from and they had put the cap on backwards so the safety plug was not closing. To get on with the story I pulled the trans cover off MG2 side and pulled the motor out,but it looks brand new. They had replaced the trans at some point as it was marked with yellow marker on the covers and i found a few brackets that were not tightened properly. So I still have to find out why I am getting the code. I will find the problem and update you guys when I find it.. Do any of you have any more ideas on what to check,because I have changed a few of these MG2 motors and i know what they look like when they are burned out. Also this car drives perfect,no shuddering or anything like that.. Any more help out there??? thanks a bunch..

 

Well I should have said this is an extension of the 1st part of this post. There are NO failure syptoms,except the codes that I posted in the beginning . I get p3001 and p3009 from the battery ecu after I start the car and put it into park or drive. It will not throw any codes in nuetral...I will check the cables going to the MG2 motor and I also found a loose bolt floating around inside the invertor that they lost to tighten the MG2 motor wires at the connection port . I will check to see if I can find any evidence of there being a problem from that.. Does that make anymore sense if you read from the front or beginning of the post?? I will check on some things today and try to update.. I would like to take some pics and post them if I can figure how to post pics...

 

Well I believe I found the problem,it appears that the bolt had been grounding against the invertor inside as evidenced by some burn marks inside the bars.Will try and post some pics..Stand by..

 

Well,I got the problem fixed. That bolt was indeed the issue. I pulled the MG2 out just to make sure ,and it looked brand new. I put everything back together and there are now NO CODES!!!!!!!

 

I got lucky on this one!!!! I still cant quite figure out why it did not fry the invertor. I drove it about 8 miles total and you would think with the bolt bouncing around in there it would have caused some smoke!!!!