2008 Prius 108k miles code P3030

Possibly bad module, but more evaluation is needed... Are you comfortable with pulling the pack and cleaning corrosion and possibly replace voltage sensor harness if corrosion is found in it, as well as doing load testing and self discharge testing? We can walk you through all that, but first want to find out what you're feeling you're capable of doing?

 

If I remember correctly I had this code once... It turned out be an anomalous code that was triggered when the HV cables going into the battery pack weren't bolted down and came loose and were arcing because I did a triple swap of three packs in two cars in under an hour and a half after sitting in traffic for two hours... Speed kills!!! And while I'm always super up tight about triple checking my work on other people's cars and doubting myself and checking again. In this instance the problem was that because it was my own car, I was more confident than I should of been and didn't confirm it was bolted down before I put the cover on. I was upset at myself for a long, long time after this.

 

P3030 is listed with problem areas of:

1. junction block assembly (busbar module)
2. Wire frame #2 (busbar and wire harness)
3. Battery ECU

Definitely look at all the module nuts/fasteners, the voltage sensing harness and the harness plug where it goes into the ecu. The plug/ecu receptacle is a known common corrosion issue.

With all the battery issues you have brought to you, it would probably be worth your time to purchase a couple Wire Frame #2 assemblies from Toyota. It has the orange plastic frame, the copper busbars and all the sensor wires/ecu plug. They're around $56 each, but well worth it.

 

Yep... It got a bit smokey once the arcing had distance increased. I was celebrating my one year anniversary of helping people with bad battery packs. When it finally failed most of the error codes pointed to a bad inverter, which turned out to not be the case... To say I was mortified is an understatement. Half the problem was during the triple swap I was also answering questions and explaining things. I've been so incredibly paranoid ever since and focusing and not willing to talk while doing the work ever since. So glad I did that to myself and not someone else. And yeah, I've always been hard on myself like that all my life.

 

I think I also got that P3030 when the sensor plug into the HV battery ECU wasn't all the way pushed in too... Not the voltage sensing plug, but the plug above it that connects the temp sensors and donut voltage sensor, so check to see if that's secure. But you usually get a ton of other codes if that's not all the way plugged in. Now that I think about it, that donut shaped voltage sensor that the main negative cable goes through might be what you want to swap out if the code comes back...

 

I'm just full of drawings today....usually I'm full of something else...

 

Dang... Sure wish I could have all your cool graphics and error code PDF stuff and Bentley manual... Maybe you put together a file of everything you got and we buy it off you? I'm hella poor but I'd gladly scrounge up the cash for what you got!

 

Recently imported from the Bahamas?

 

The great thing about it is that if you wanted to, you could part it out for a quick 2k. It's a no lose situation.

 

You could make some cool art out off all that hood damage... Maybe paint a moon on it and those hail dents could be the craters...