2007 (2nd Gen) Engine lights, limp mode, and battery cooling fan

If there are warning lights on, there are DTC codes stored. Get them read and you'll know the problem

 

Reading the symptoms you have, I would guess you have a failing hybrid battery.

 

Dash lit up like a Xmas tree, hearing battery fan in back, engine always running, & NO power/limp mode, are the classic signs & symptoms of a failed HV Battery.

You could shop around independent Toyota mechanics to see how much they charge to get the codes read. If they don't have the proper equipment to read the codes, you shouldn't have to pay for services not rendered.

OR, since all signs point to failed HV Battery, just get a new HV Battery.

 

Yep. Failed battery. Classic symptoms.

 

Ummm, let me guess P0A80!!!!

 

Isn't an OBD2 code scanner able to read a P0A80? My cheap, simple code scanner read the P0A93 code when the HV
inverter electric pump failed in my Gen 2 so it stands to reason that my code scanner should be able to read the P0A80
if and when it the HV battery dies while I still own it.

 

If you are unable to spend $200 then you'll need to invest some time.
Do you have an Android phone?
If so buy a Bluetooth OBDII dongle, and the Torque app.
Then use it to scan your car.

Feel free to call me if you want to talk through any ideas.

 

It does stand to reason; however, auto-parts store and the generic code readers (stand-alone devices) don't seem to reliably do it.

I have 4 non-dealer options for reliable code reading in my sig.

Steve

 

Hello I have 2006 batt fan comes on immediately car runs in limp mode and codes 1116 1121 stay on

 

Hello guys ..the place where i live Tanzania thereis no one with this sofware. Priuses are not common here. Where can I downlod the TechStream software? Any link?

 

P1121 Coolant pump issue.
Help with P1116 | PriusChat

 

Hey, I have the same exact symptoms with my car. Currently. I have a 2008. All the lights came on and puts me in limp mode after 10 mi. I took it to the dealership and they charged me $160 and they found code p0 101 and p0171. I changed the maf sensor, disconnected and reinstalled the air filter box as they suggested. It's still running the same.lean apparently. I've been able to get back and forth to work two days now but it's getting worse and I don't want to ruin my car.uggh

 

So, what are you capable of doing? (as far as diagnosing this problem).

P0101 is set when the ECM sees a reading from the MAF sensor that's way off from what it expects - based on RPM and throttle opening. Since the MAF is one of the main sensors used to determine the amount of fuel injected, a problem there can/will cause a fuel trim code like P0171.

Maybe the wiring to the MAF is faulty. Maybe something (like a bad vacuum leak) is causing the MAF the report incorrectly.

If you want to figure this out, you need some kind of scantool that can display ECM data (such as RPM, MAF, short term and long term fuel trims, etc), as well as codes, and freezeframe data. That's a "snapshot" of engine operating conditions from the (almost) moment when the code set.

That kind of data can help point you in a direction to figure out the cause of your problem.

Here's a thread that reviews several scantool apps and devices (plus you might need a decent digital multimeter to check voltages on the wiring).

https://priuschat.com/index.php?posts/3290690



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