Red Triangle VSC, ETC Engine Codes: P0010 - Powertrain, P1121 - Powertrain, P0A80 - Powertrain

Based on the screenshot, it looks like one or both of the battery modules that make block #7 have gone bad and need to be replaced.

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No, the problem that you have with the HV battery is not related to the 12v battery.

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Check the voltage of the 12v battery with your meter. Does the car go into ready mode?

What device did you use to retrieve the trouble codes?



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So with the car running you measure the voltage at the 12 volt when the engine's running You should see around 14.5 that's coming off the inverter 13.6 to 14.5 anywhere in there We should be okay on 12 volt charging now whether the 12 volt is accepting and holding the charge that's not on the inverter or the car that's on the battery. They have test for that too. Usually because your traction battery is old and all over the place doesn't really affect how the inverter is charging your 12 volt. When my traction battery was completely literally dead and the engine was running all the time my 12 volt was charging just fine by the inverter no problems at all My traction battery barely had the energy stored up in it to start the ice engine to spin everything up but it still did just barely I'm getting 36 mi to the gallon. Is the $1,700 worth it well you know when the cars running and everything's right you're getting 40 mi to the gallon consistently so there's always that or you can go out and buy a Yaris and driven carefully that'll get close to 40 mi to the gallon traveling those are basically your choices in similar vehicles same engines Toyota reliability that sort of thing now you could go newer and get a little better mileage but the cost will be a lot more I'm talking in the 3000 dollar range or so at least where I live so to me the 1400 or 1700 would be worth it for the $1,700 I'll be getting a new battery from Toyota for the traction battery so depending upon where you live things may be different The interior isn't so good If you really wanted to you could gut a junk car with a good interior I've bought several and change out the seats and the door panels and take a Saturday afternoon but it's easy to do as long as the headliners not damaged got holes poked in it whatever you're in good shape the rest of the stuff is easy to change.

 

You definitely have a problem with the hybrid vehicle (traction) battery. The different options to fix it are listed in post #2.

The P0010 trouble code is not related to the problem with the HV battery. It is a separate problem. So it would be a good idea to purchase a $50 scanner (for example, the Autel AP200) that is capable of reading all trouble codes in your Prius before spending money for the HV battery. See this link for a review of different scan tools: https://priuschat.com/threads/gen2-obd2-app-review.232741/ Look at post #37.

 

If you want to work on your car, then I would get a scantool like the Autel. It will let you see codes and data from all the ecu's on the car. It will NOT "tell exactly what's wrong".

You need to get a copy of the factory service manual which has the diagnostic procedure for P0010. Use the search function to look in the Gen2 forums for something like "service manual pdf download". Or get a short term (2-day?) subscription to Toyota TIS which lets you access and download factory service info.

P0010 sets when the ECM detects a short or open in the VVT solenoid electrical circuit. Do you have a digital multimeter? Can you test the resistance of the solenoid?

 

Yes, Dr Prius is okay for looking at hybrid vehicle battery stuff, but is limited for overall ECU reading.

And you bought an OBDII interface dongle that essentially provides a BlueTooth interface. You use whatever apps that can talk to it on your phone. Some apps are better than others.

 

Try using the Car Scanner ELM OBD2 app and see what trouble codes it can read. The app is free.

 

Car Scanner can only communicate with the ECM, hybrid control, and HV battery ecu's.

 

Read this thread that reviews several scantool apps and devices.
https://priuschat.com/index.php?posts/3290690

The Autel AP200 can read codes and data from all systems on a Gen2 Prius, including INF sub codes (where applicable). There are a couple tools that can do more - closer to what the factory Toyota Techstream can do, but you have to figure out what you "need" vs how much you want to pay.

Your OBD2 adapter is the cheapest of the cheap, I am not surprised that Dr Prius is glitching with that (you can read about it on the Dr Prius website).

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