Hi folks,

I finally joined the P0A7F code club! IMA and check engine light is on. 2006 HCH-II with 70k miles.

I installed the hybrid automotive prolong charge-discharge unit several years ago so I’m doing a deep conditioning cycle now. drain-charge-drain-charge. Hopefully that will get rid of the light for a few months while I figure out what to do.

as you all know, this car is a huge pain to drive when the battery is giving zero assist.

I can buy a new bumblebee battery and I think I can get many more years from the car because the mechanical condition is great. (Except that one time the transmission slipped.) On the other hand the car’s monetary value is so low that I would never recover the investment of a new battery in a trade in. Also with remote work I might kill the replacement battery by letting the car sit too long between drives.

 

Please be cautious on the discharges. There is rarely any benefit to deep discharges vs. the more conservative ones to around 100V. 66V is the absolute floor.

Ensure each charge is 25 hours.

 

After balance charge for two days, I reset the DTC code and took a ten mile test drive. Everything seems to be back to normal for now. I’ll have to see how long before my next IMA light.

 

At long last got the new modules and supplanted it. Could just took snaps which I will post it soon.. My terrible, when working with HV Battery I was wearing a metal watch and unintentionally came into contact with the modules, the watch fell to pieces with heat. I got injured a little. Supplanted the modules with the flawed ones. Everything looks OK. I'm intermittently checking the Information list through toyota techstream. Will post the pdf's and pictures for reference reason soon.


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snaptube vidmate

 

How are you monitoring a Honda Civic Hybrid with Toyota Techstream?

 

Who's still here in 2025? My 2006 is still under 100k miles, and I now have a feeling that the age (19 years old now) will kill the car before the mileage.

The discharge-rebalance worked for me in 2020, but I now get the IMA light about every 6 months. Then I do the discharge-rebalance again and it's good for another 6 months. I just did one last weekend and it works fine again. I know I should have replaced the battery years ago, but then again I think it's kinda cool that I'm still using the original Honda battery from 2006.

One of these days, the battery will no longer respond to the discharge-rebalance. I hope I can make it to 100k miles before that happens.

 

Yooo I'm still here. I got a 2006 HCH2 too with 220,000+ now. I grid charge mine about once every 1 to 2 months.