Cleaned corrosion from buss bars now getting P3000 code

This "no other codes" part bugs me. P3000 is a code from the hybrid vehicle control ECU (up in the instrument panel area) and typically means you have some more-specific code from the battery ECU (inside the battery enclosure) telling you what's what.

I would usually interpret this as meaning your code-scanning tool/app is showing you HV control ECU codes but not battery ECU codes. On the other hand, you've got a tool that shows you battery block voltages, which are also from the battery ECU, so it's not completely unable to communicate with the battery ECU. Odd.

Can you at least get the INF code for the P3000 in the HV control ECU? That would still be a little better than shooting in the dark.

 

Probably a misconception involved there: the P3000 doesn't come first. The hybrid vehicle control ECU sets that code because other codes are reported by the battery ECU.

It is quite common on PriusChat to see posters saying they have "only" some code whose meaning is known to be that other codes are present. Comes of using scan tools that are not retrieving codes from all ECUs in the car.

This specific situation is a little less familiar to me, as the P3000 does have five different INF codes, and some are more often seen than others, and I'm not prepared to bet the farm that there have to be certain battery ECU codes for every possible P3000 INF code—though I would easily bet, say, a coffee.

Knowing the P3000 INF code would at least be a little more helpful; then you at least know which one of five basic situations you're in, rather than shooting all in the dark.

As an aside, which dash warning lights are on when you have this P3000?

 

This guy got the same code and is showing the same type of connector corrosion and reporting moisture problems as well. He pin pointed the problem by testing the voltage?

Toyota Prius P3000: Check This Before Replacing Your HV Battery | Torque News

 

P0A80 and P3024 are both set by the ECU inside the traction battery, telling you the traction battery is considered end-of-life (P0A80) with the biggest offender being block 14 (P3024).

P3000 was then set by the Hybrid Vehicle Control ECU to say "yo, heard about some trouble from the battery ECU".

C1259 and C1310 were then set by the brake/skid ECU to say "yo, heard about some trouble from the HV control ECU".

Given the recent work done inside the battery, it's probably worthwhile to use Techstream and see just what the voltage and internal-resistance readings for block 14 are (found in the battery ECU data list), just in case, for example, there was a mishap in reconnecting the sensing lines.

 

Nice work, I am impressed. I am curious what you paid for the new hybrid battery from your local Toyota dealership. Would you mind sharing that info with the Prius Chat community?

A 2008 with 207k miles was definitely due for a new hybrid battery.

I hope that your Prius is trouble-free for many more years.

 

Hi Maria, Well done on the work! The great thing about a new OEM battery is that when properly installed, you have another 10-15 years of life and a lot of reliability to look forward to!

For future reference only, the 0.19 shown on techstream for internal resistance of a block is the default value the ecu applies after a loss of 12v power and also immediately after doing a code reset. This value will 'recalibrate' after a bit of use. A new battery like yours will likely stay at 19 or maybe 20/21ish for quite a while. Older batteries, that are still in good condition (like an original 2005/175k miles I recently examined), are typically in the 29/30 range.

If you ever have another Gen 2 battery to play with, the wire harness you're discussing above is available from Toyota for about $65.
The orange heavy gauge orange (long one that connects to neg terminal, the short one for the positive terminal, and the safety disconnect assembly are also available separately from Toyota.

 

Awesome! This new battery should have a much longer life because of upgrades made to the chemistry back in 2015 that allow 30% boost in power both in charging and discharging. New hybrid cars have 150k warranty on it. But I think the only issue you will still have is corrosion. I personally have switched to nickle plated bus bars for over 5 years now and have no issues.

Nickel-Plated, Copper Bus Bars & SS Nuts set for Prius 2004-2015 (28 Modules) | ACENBAY

 

If you connect techstream to your car, what does it show as the max available charge and discharge limit? Should read in KW.

 

With all the inverter software updates Toyota has been implementing, that may not show the full potential of a newer battery. But Maria can still try to check her techstream data and see if there is a difference.

 

The maximum power output from the HV battery, whether charge or discharge, is limited to this number regardless of software. I'm curious if the Gen 3 numbers are 30% higher than the Gen 2.

 

Toyota did something they never did before with a Prius in 2016.
They advertised trailer towing capabilities (with modification to the cooling systems).

 

The connection to this thread is somehow escaping me.