Back in 2019, the main battery for my household's 2014 Toyota Prius C conked out on my sister. However, it wasn't until this year (2026) that the main battery was finally replaced. Unfortunately, it how has a "permanent" OBDII error code of P0A80. My parents and I really want the Prius to pass smog. (Yes, we live in California.) Yes, I am aware of the 200/15 rule, but is there a good way to make the P0A80 code go away for good going forward? Yes, I am aware that Scotty Kilmer doesn't recommend the BlueDriver stuff anymore. For the record, the Prius currently has 199,862 miles on the odometer. It has an automatic CVT transmission.
this year (2026) that the main battery was finally replaced. Unfortunately, it how has a "permanent" OBDII error code
sounds like they didn't finish the job. Is their work warrantied?
Here is the procedure to check the system. If the light goes away you're good. If not, there's still a malfunction
battery replacement procedure. Maybe they missed something:
is there a good way to make the P0A80 code go away for good going forward?
No. You have to fix the condition causing the code.
By definition, a permanent code can only be cleared when the vehicle's computer determines that the fault associated with the code has been corrected. Until that happens there is nothing you can do.
Is there a particularly good way to do 15 warm-up cycles going forward?
@sapporo-boy drive the car