01 p3006 no lights or symptoms

hey guys,
last night my girlfriend and i were on our way to a party(about 16 mi away from my house) and we stopped at a light, about 8 mi from my house, engine shut off and went into ev mode. we pulled out in ev mode for a good 1/4 mile then made our turn onto the ramp for the highway, engine kicked on, my scangauge showed SOC 34.8 then it began charging as normal. next thing i know i look down at the scangauge and its showing 70 soc then 75 then 80 it went all the way to 94 then showed 0 soc. i looked at the mileage and it was showing 42 mpg something on the highway, and stepped on the gas, assist kicked in as normal, car had power. but it kept charging the battery. i scanned the car with scangauge. code p3006. checked voltage high 18.2v, voltage low 18.0v. no lights or anything. we got to the party shut the car off. turned it back on, started right up, no code, batt indicator full, scangauge said 94.6 soc. voltages HI 17.8 LO 17.6 got done the party. car starts up, no codes. 94.6 soc. car ran normal and bled off the soc back to its normal 65 something. it went int0 ev mode and ran it till the engine started again to charge the battery. everything operates normal, no codes. it was 18 degrees f out. my 12v battery is 13.6v while driving, sitting its 11.4v which i think is weak. 156k miles what do you guys think, did my car have a brain fart?

thank you,
scott

 

thank you patrick, im going out to look at some batteries for this car. as I believe your right about the 12v battery. my traction battery i just went out and checked is sitting at 64 soc from last night and it was 11 degrees f this morning and voltages are 16.0 hi 15.3 low according to scangauge.

 

Hopefully I'll get some others to chime in and let know what they think. I know I can pick up 38 new 2013 cells on Ebay. I figure if the traction battery goes ill do that, get em shipped to my house and install them. so far we drove about 20 mi and nothing, steady 40 mpg and it seems fine, 30 degree weather. trunk does not smell like the battery either, im.hoping it s the 12v batt. What do you think?

 

I got another 12v battery for it. 79 at walmart, ever ready 51R same dimensions as the optima in there. that suprises me, the optima battery is only from 2010. and its bad. they wont honor that will they? it was in the car when I got the car. (no this will not turn out to be a 12v battery thread lol)

 

thank you. im starting to think that bob is right about that battery recalibration thing. i read about that. but i dont understand why it set the p3006 code but no lights. but i feel the car has better power, and higher mpg because of it. plus when i used to park at night the soc would hang around 62-64 now its at 65-68

 

I just got done putting that ever start battery 51r from walmart. its tight but it fits. 500 cc amps

Ever Start :sitting its 12.69 nothing connected to it, connected its 12.48. key acc 12.4. key on it says 12.0 ready mode 13.8v
so better than the optima that was in there, i have the optima on a charger trying to see if it can bring it back.

optima when sits nothing on it 12.1, connected its 11.9. key acc 11.8 key on 11.4. ready mode 13.5/6

was my optima still ok or is it gone? im still thinking about one of the u1 wheelchair batteries.

 

i got it on charge right now, i think im going to let it charge till tomorrow night after work 10pm, ill disconnect it and check it after 24 hrs.

 

Ok update: I charged the optima out of the car for 36 hrs. Voltage last night at 10pm said.16.16. I checked it this morning, voltage was 12.97. I'm going to check it tonight at 10pm to see if it is still the same our not. If it still is about the same what do you reccomend. Return the ever start and reinstall the optima? Or keep the ever start in the car?

 

Yes it was a typo, it was at 15.16v last night. 12.97 this morning

 

How many amps should my prius draw sitting with key off. And whet should my battery voltage be at with key off, acc, and on. This is the 12v side not hybrid side. I'm off work tomorrow and want to check all this.

 

I will check that when I get home. I think my everstart went from 12.8 to 12.6 sitting. Key on was like 11.8v, its new, maybe it didnt have a good charge. I do know it's going back anyways, the Costco I work at has the 51r batteries, for $10 less than walmart and they are 600 crank amps. 525 cc amps. Wish I knew the amp hours though. Anyone know how I can figure it out

 

UPDATE: just checked the Optima battery. holding at 12.90v since last unplugged yesterday at 10 pm. im pretty thrilled that I can get my $90 back from walmart. barring that when I put it in the car it matches up with the ever start or does better than the ever start, voltage wise. im going out to check the amp draw now while the car is sitting.