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I got check engine light abs light brake light come on

Customer Question
i got check engine...
i got check engine light abs light brake light come on engine doesnt restart i got u0129 code
JA: Does the light stay on, or does it blink?
Customer: yes stay in the dashboard
JA: What is the model/year of your Toyota?
Customer: 2010 prius
JA: Are you fixing your Prius yourself? What have you tried so far?
Customer: \yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: sometimes engine will start and shut off its misfiring
Submitted: 1 year ago.Category: Toyota
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Customer reply replied 1 year ago
yesterday i got ecm code it says ecm its not communicating and today i got p3000 and u0129 code but befor i got p0300 code
Customer reply replied 1 year ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 39 minutes by:
1/11/2017
Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago
Todd M
Todd M, ASE Certified Technician
Category: Toyota
Satisfied Customers: 1,538
Experience: Technician at Montgomery Motors
Verified

Hello. My name is ***** ***** I will be assisting you today. First of we will get the p0300 code understood. this is just letting you know that the vehicle is misfiring due to spark plugs or coils, etc. The other two codes are you issue.

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Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago

The other two codes are letting you know the hybrid system is having issues communicating with the vehicle. The could be caused by bad connection of power, ground, or even a faulty sensor.

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Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago

Have you changed the spark plugs or coils lately?

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Customer reply replied 1 year ago
hello
Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago

Hello. How are you?

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Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago

The best advice that I can give you on this is to take the vehicle to a technician who has experience with Prius/Hybrid vehicles. If you are not experienced with working on hybrids(especially the electrical), not only can you damage the vehicle, but you can be hurt very seriously.

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Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago

The connection to the ECU will have to be checked and the CAN system will have to be serviced.

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Toyota Mechanic: Todd M, ASE Certified Technician replied 1 year ago

Are you there?

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Customer reply replied 1 year ago
maybe ecu is bad?
Customer reply replied 1 year ago
i thought you gonna help me
Customer reply replied 1 year ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer reply replied 1 year ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer reply replied 1 year ago
hello i need a certified mechanic
Customer reply replied 1 year ago
pls reply
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago
Pedro Goncalves
Category: Toyota
Satisfied Customers: 13
Experience: Licensed Master/Hybrid Technician at Mendes Motors
Verified

Hi,

My name is ***** ***** I'm a Master/Hybrid Toyota Technician,

Please inform me of all the codes currently present, please and thank you

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Customer reply replied 1 year ago
I got p3000 and u0129
Customer reply replied 1 year ago
But before that give me a p0300
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

2010 Prius?

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Customer reply replied 1 year ago
Engine is misfire
Customer reply replied 1 year ago
Pls call me
Customer reply replied 1 year ago
last day I got code it says Ecmc /Pcm not communicating
Customer reply replied 1 year ago
I already pay
Customer reply replied 1 year ago
Why you charge me again
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

Did you speak with anybody?

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Customer reply replied 1 year ago
No
Customer reply replied 1 year ago
2010 Prius
Customer reply replied 1 year ago
You think it's a bad ecm or pcm?
Customer reply replied 1 year ago
Pls reply
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

Then you haven't paid for the phone call.

Phone call is considered a premium service

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Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

No I don't. It's rare for the ECM to go bad

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Customer reply replied 1 year ago
I paid yesterday twice and nobdy called me only today
Customer reply replied 1 year ago
Why I got Ecm code?it says it's not communicating
Customer reply replied 1 year ago
Engine knocking and shut down and doesn't start
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

that's normal. when there's a misfire

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Customer reply replied 1 year ago
If you are a certified Toyota technician you know what's wrong with tha car
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

unfortunately it's not that easy. There's a lot of things to consider. Although you can read the codes but the hybrid system has a 7 code system

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Customer reply replied 1 year ago
I change 5 modules of hybrid battery already
Customer reply replied 1 year ago
I got 7.2 volts some of them
Customer reply replied 1 year ago
U think bad spark plugs?
Customer reply replied 1 year ago
I take out all the plugs look bad
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

there's possible a bulletin for your car

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Customer reply replied 1 year ago
What
Customer reply replied 1 year ago
What bulletin
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

I'm researching but I would like to know what are you looking for?

Are you going to attempt to fix it yourself? Do you just want the possible thing that can be wrong with the vehicle?

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Customer reply replied 1 year ago
I'm already fixing it
Customer reply replied 1 year ago
What's wrong with the car
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

sir. Understand that this isn't a straight up answer.

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Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

There s multiple reasons for the misfire.

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Customer reply replied 1 year ago
Ok give me that
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

Nobody will be able to tell you what the problem is. We can only tell you the most common issues

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Customer reply replied 1 year ago
I already clean the egr
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

Spark plug, Coils, Injector Purge,

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Customer reply replied 1 year ago
What is coils?
Customer reply replied 1 year ago
What is injector purge?
Customer reply replied 1 year ago
In the fuel injector?
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

Throttle body service

remove the throttle body and see if there's dirty water inside the intake manifold

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Customer reply replied 1 year ago
I already remove and clean it
Toyota Mechanic: Pedro Goncalves,
 replied 1 year ago

Coil are black/gray and go on top of the spark plugs

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Customer reply replied 1 year ago
The big black thing connected to egr
Customer reply replied 1 year ago
The long rubber connected to the plug?
Customer reply replied 1 year ago
I need to change the spark plugs?looks bad all of them
Customer reply replied 1 year ago
Why the window controller the light it's blinking looks like there's a shortage power
Customer reply replied 1 year ago
Or ground
Customer reply replied 1 year ago
I got new 12 volt battery
Customer reply replied 1 year ago
Sometime engine start and shut down like a low power
Customer reply replied 1 year ago
Ang sometimes knocking and shut down some times doesn't turn on
Customer reply replied 1 year ago
Hello
Customer reply replied 1 year ago
Where are u
Customer reply replied 1 year ago
i want a new Hybrid Toyota Expert, please.
Toyota Mechanic: nelson freitas,
 replied 1 year ago
nelson freitas
Category: Toyota
Satisfied Customers: 110
Experience: AutomotiveTechnician at brantford toyota
Verified
Hello,My name is Nelson, I have been an automotive technician for over 12 years. And I am currently working at a Toyota dealership. I'ld like to help you with your problem but first I will need some information from you to help clarify the problem.From what I have read you first had the check engine light on with the U0129 code; then the P0300 appeared afterwards?Also what have you inspected and/or replaced on the vehicle since then?Hope to hear from you soon,
Nelson
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Customer reply replied 1 year ago
Hello
Customer reply replied 1 year ago
Are u there
Toyota Mechanic: nelson freitas,
 replied 1 year ago
I am, but I m also at work. I may not get to respond immediately but I will as soon as I can.I'ld like to help but I will need you to anewer the 2 questions I asked above so that I might better understand the problem
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Customer reply replied 1 year ago
I got two codes p3000 and u0129
Customer reply replied 1 year ago
Can you help me for that?
Customer reply replied 1 year ago
What is the problem of the car?
Customer reply replied 1 year ago
Pls reply
Toyota Mechanic: nelson freitas,
 replied 1 year ago
In order to help you find the problem i will need to confirm some information first.You menu one the U0129 appeared first. And the the p0300 came afterwards. How long did it take for the P0300 to set. And did you do anything in between the codes?
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Customer reply replied 1 year ago
No I delete that code po300 and some of them say po2 sensor camshaft something like that but I delete all of them and now ni got two new code uo129 and p3000
Customer reply replied 1 year ago
Engine knocking and shut down and doesn't start
Customer reply replied 1 year ago
I replace 10 pcs hybrid battery already
Toyota Mechanic: nelson freitas,
 replied 1 year ago
Ok, which battery did you replace the small 12v battery or the large hybrid battery? and why?
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Toyota Mechanic: nelson freitas,
 replied 1 year ago
what do you mean by 10 pcs?
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Customer reply replied 1 year ago
the 12 volts and 10 pcs hybrid battery coz it's only 6.3 volts
Customer reply replied 1 year ago
I clean the egr and already
Customer reply replied 1 year ago
But the spark plugs looks bad I take all of them off and put it back
Customer reply replied 1 year ago
Why on my window controller all the lights are blinking look like I got short circuit in the car
Customer reply replied 1 year ago
The modules hybrid
Toyota Mechanic: nelson freitas,
 replied 1 year ago
Ok. Can you think of anything that happend before all of this?Also if the plugs look bad I think you should replace those.How many km are on the prius, and has it been well maintained?
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Customer reply replied 1 year ago
159,716. Miles
Toyota Mechanic: nelson freitas,
 replied 1 year ago
Also ild like to confirm.
You took the hybridge battery apart and replaced the individual cells?
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Customer reply replied 1 year ago
bad only 10 pcs bad cell. I replaced
Customer reply replied 1 year ago
The car is running and shut down suddenly and engine light comes on bad I check my 12 volt battery is only 9volt at the time is dying
Customer reply replied 1 year ago
I replace it but still the same
Toyota Mechanic: nelson freitas,
 replied 1 year ago
Ok. And now the only 2 code are. The U0129 and P0300
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Customer reply replied 1 year ago
I got two codes u0129 and p3000
Toyota Mechanic: nelson freitas,
 replied 1 year ago
Ok. The code U0129 is indicating that there is a communication problem between modules. Now this could be caused by one of the modules or possibly a wire in between the modules.I would suggest that you take the prius to a Toyota dealership where they can scan all of the modules for codes with thier scan tool and that will be able to help them find the problem.The problem with aftermarket scan tools is that they will only scan the engine ECM, but not all of the others that are in the vehicle.
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Toyota Mechanic: nelson freitas,
 replied 1 year ago
I also suggest that when you do take it there you let them know of every thing that you have done so that they are aware what has been done and what has been replaced.
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Customer reply replied 1 year ago
You don't know?whats wrong?
Customer reply replied 1 year ago
It's not Ecm problem?last day I got ecm code it says Ecm it's not communicating
Toyota Mechanic: nelson freitas,
 replied 1 year ago
No I don't know what is wrong with the vehicle. There is no way of knowing what is causing this code to appear without a Toyota scan tool and some time diagnosing the vehicle.As I mentioned there will be many more codes stored in other modules that you can not access without a more advanced scab tool. And I would rather have you spend some money having a Toyota technician properly diagnose the problem; then spend more time and money replacing more parts that do not need to be replaced
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Toyota Mechanic: nelson freitas,
 replied 1 year ago

Hello,

I was wondering if you were able to get any more information or diagnostic codes from any other modules?

Nelson

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Customer reply replied 1 year ago
No
Customer reply replied 1 year ago
Only p3000
Toyota Mechanic: nelson freitas,
 replied 1 year ago

ok do you still have the U0129 code as well? Have you replaced the spark plugs that mentioned did not look too good?

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Customer reply replied 1 year ago
No only p3000
Customer reply replied 1 year ago
I take off the contactor from hybrid battery and I will replace it including the 3 relay
Customer reply replied 1 year ago
I will know it tomorrow if the car will start
Customer reply replied 1 year ago
I replace the plugs
Toyota Mechanic: nelson freitas,
 replied 1 year ago

ok, let me know how it goes afterwards.

Nelson

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nelson freitas
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Satisfied Customers: 110
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