Prius 2007 error lights

[KMRahman]

I have Toyota Prius 2007 with odometer reading of 115000 (not sure about meter reversal). About 1 or 2 weeks ago, it gave me an error (check engine, vsc, yellow brake light got on alongwith red triangle light), The car was running quite normal. I disconnected the negative terminal of 12V battery for a while and after reconnecting the battery terminal, the error had gone. Today the same error has re-appeared and still the car is running smoothly with no driving problem whatsoever.

What can be the problem? What should I do?

Waiting for reply

Thaks

[anon35615524]

Bro get your car scanned through computer, to figure out exact issues depending on error code(s), and take remedial actions accordingly.

[sohelahmed]

please visit efi electrician....he will scan and tell u exactly what is needed...if u can post picture..experts may tell you here...

[mushiallover]

A.O.A

get your car scanned through OBD 2 or techstream to know the problem.

thanks

[KMRahman]

Car scanned. Showed error code P3000. What does it mean?

[capsat]

Thats the code for main HV Battery,

however you need not to panic, goto a battery shop and ask the tech there to check for 12V Primary battery in the vehicle which is in the rear hatch, Normally the JDM Scrap exported buyers in PK never bother to check for primary 12 V battery life before it starts to throw CEL.
also check for HV battery cooling fan it may be clogged with the dirt / lint within the cabin and battery thermistors are active to cut off over- heating / charging to avoid short circuit

If the primary battery is never changed since purchase it is time you replace it, please

[KMRahman]

checked the 12V battery through MFD (Multi-Functional Display). It shows 12.1V current. I can hear fan sound coming out of the vent in the back seat.

[capsat]

that low voltage it has to be between 12.6 - 13.2 and with engine idling shall be 13.8 - 14.1

access the fan vent & clean it there shall be no sound .... just like PC fan
noisy means dirty

[capsat]

[KMRahman]

I have already checked the battery, it showed 12.4V in maintenance mode (Switch the car "ON" without pressing the brake pedal).

It showed 11.7V in maintenance mode with headlights "ON".

It showed 14.1V with engine "ON" (Switch the car "ON" with pressing the brake pedal)

Furthermore, yesterday it showed following error lights on dash

alongwith following MFD error

Today it showed following error without erasing DTC code

error on MFD remain there

[capsat]

1st STEP GET Primary Battery Replaced -

[KMRahman]

Someone told me that invertor coolant motor is faulty and needs replacement.

[Naweed]

typically this is a HV battery replacement indiaction but could be due to primary battery or the cooling fan .. there is a simple check of HV battery .. when u drive see how much times it takes to charge hv battery and then that charge runs vehicle for how much time .. another typical value is hv battery charging to 6 bars and discharging to 2 bars .. these r normal values

so if u car frequently shifting to engine instead of runing on hv battery then most likely ur hv battery is weak .. ur fuel average will drop as well .. if i remember correctly there is a software in car or in obd which tells life of hv battery in percentage ,, google to find it

[Naweed]

keep ac temperature setting low like 25-26 degree a higher setting also engages engine to run the car continuously

[capsat]

visit that someone & kick under belt.,

[KMRahman]

As VSC and (!) light wet off without erasing the DTC code, so I scanned the car again and it gave me error "P3020" When I google it, it show HV battery block 10 weak

[capsat]

seems like block 10 have internal corrosion., and not taking up full charge. If you are in Karachi visit Time Motros at Sharfabad round about when heading towards university road jail intersection.

[Newtechautos12]

If anyone having issue in their Prius from 2002-2013 related to abs unit and installation whether 1500 or 1800 can contact us we have fresh complete abs units in our stock. We are in karachi. For details 0314-2042309.

[abubakartahir94]

Seems like an issue with your inverter pump

[pearltripadvisor]

i had same problem plz help me solve it
wt u do for this