P0420 please help :(

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Colton1er, Mar 23, 2018.

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  1. Mavi

    Mavi Active Member

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    https://www.arb.ca.gov/msprog/warranty.pdf

    10 is for battery,15 is for emissions from what i understand.
     
    #21 Mavi, Mar 24, 2018
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  2. exstudent

    exstudent Senior Member

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    My money is on you got a rebuilt battery. How/Why? Previous owner replaced/repaired it, then got rid of the car. You happily bought the car not knowing/askingcritical questions about the HV battery.

    If the batt was genuine OEM HV battery, owner would keep the car. How/why? Expensive repair, but the car could go for another 10years/100K+ miles. $2K+ would be a cheap repair investment for another 10years/100K miles.

    Pop the top HV battery case, and examine all the serial numbers. The serial numbers on the modules should be sequential. Are they?

    Prepare for this replacement. The good news, genuine OEM HV batts have dropped to $1600 online. You will have to find a dealer who will sell to you or your mechanic, and who will sell at that online price, or match, or lower their asking price.
     
    #22 exstudent, Mar 24, 2018
  3. Colton1er

    Colton1er New Member

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    Forgot to mention that I don’t have a code reader, so I’m not sure if it’s still the p0420. But prior to pulling that code before this whole ordeal, I had never had any problems with this vehicle.
     
    #23 Colton1er, Mar 24, 2018
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  4. Colton1er

    Colton1er New Member

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    Man, I really hope this isn’t the case..but I’d be lying if I said this thought hadn’t crossed my mind. Maybe I’ll pop open that case and check it out.
     
    #24 Colton1er, Mar 24, 2018
  5. Raytheeagle

    Raytheeagle Senior Member

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    Depending on where in San Francisco you are, maybe @SFO would be able to help with the codes:).
     
    #25 Raytheeagle, Mar 24, 2018
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  6. Colton1er

    Colton1er New Member

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    2BF1A5AD-2F85-4B40-9AF0-69F22A26CEAF.jpeg
     
    #26 Colton1er, Mar 24, 2018
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  7. exstudent

    exstudent Senior Member

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    What does the invoice say? And wat company did the replacement of the Hv battery?

    Rebuilders will reuse the case and just replace the weak/failed modules.

    Dormat and FraudTech(Greentech) paint the cases orange and green respectively.

    Removal of that top cover is required to see the module serial numbers.
     
    #27 exstudent, Mar 24, 2018
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  8. Mavi

    Mavi Active Member

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    If you pop that cover off and take a pic we can figure it out fast. Looks like a legit replacement atm so far..
     
    #28 Mavi, Mar 24, 2018
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  9. audiodave

    audiodave Active Member

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    My old cat looks fine and it had the 420 code. Never came back after it was replaced though. But wondering if the rear O2 sensor could have been the problem. Hell if the front O2 is original it's efficiency has to be off a little I'm sure. I have 237,000 miles.

    Posted via the PriusChat mobile app.
     
    #29 audiodave, Mar 25, 2018
  10. Colton1er

    Colton1er New Member

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    Just dropped my car off at Luscious - you guys weren’t joking. That place is legit as they come. I spoke with Gina who I believe is the shop manager. I told her everything about the car and she was super helpful and explained that my car most likely needs a new hybrid battery. They install OEM batteries for 2950 including parts and labor, or replace all of the existing modules with new ones for 2750.

    This all took place before a specialist diagnosed my car, so they are going to call me back after it receives a proper diagnosis, but she explained that based on what’s going on that this is most likely the problem.

    If miraculously my battery doesn’t need replacing and the fix is cheaper, I will most likely be moving forward with a repair from them...but in all honesty I’m not prepared to spend that kind of money on this car right now, especially since I still owe the bank a little on it - and my girlfriend and I are getting ready to move into our own place next month / prepping for all of the expenses that come along with that.

    I really appreciate everyone’s input and contributions of knowledge to this thread. Thank you for helping me out in a time of need and confusion. Hope everyone is having a great week so far. I’ll keep you all updated as I move forward.

    Cheers
    Colton
     
    #30 Colton1er, Mar 28, 2018
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  11. Mavi

    Mavi Active Member

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    You can do the hv battery repair yourself for much less if you are willing to spend the time to fix it. Got multiple threads on here about it.
     
    #31 Mavi, Mar 28, 2018
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  12. Colton1er

    Colton1er New Member

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    Repair as in replacing old modules? I’m not super well versed w/ hybrid technology - although I have always worked on all my own cars & motorcycles etc...wouldn’t want to bite off more than I could chew with this thing.
     
    #32 Colton1er, Mar 28, 2018
  13. Colton1er

    Colton1er New Member

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    Just drove home from Luscious and the car was losing power like crazy / only going 30 with the pedal almost floored. I was super careful and thankfully made it home.

    That being said - does anyone here have any info on reconditioned batteries or battery rebuilding services in the Bay Area?
    Ideally I’d like to get one of those and then sell the car, or just sell it without rebuilding as a whole car to someone who would replace it.

    Any info is appreciated.
     
    #33 Colton1er, Mar 28, 2018
  14. fotomoto

    fotomoto Senior Member

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    You never really verified what the replacement battery is but the odds are very, very likely it's just a rebuilt from a vendor who doesn't paint their cases which most smaller operators don't. Anyways, it sounds like it's a failed again and is in emergency turtle mode.

    GOOD LUCK!
     
    #34 fotomoto, Mar 28, 2018
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  15. Colton1er

    Colton1er New Member

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    Sorry, forgot to respond to this before. I bought the car from a sketchy used lot, looking back I should’ve never even went there. But the car looked and drove great in person, the guy assured me that the battery had been replaced recently and he had paperwork for it. Fast forward after buying the car, a few trips to the bank etc I forgot to get that paperwork for him - he said that he would mail it to me w/ my current registration...he didn’t. I called and left a voicemail last week about it, no response. I got got.
     
    #35 Colton1er, Mar 28, 2018
  16. Raytheeagle

    Raytheeagle Senior Member

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    You the diy type, where you would undertake a rebuild yourself?

    There are plenty of “rebuilders” on Craigslist if you are looking to offload it out here.

    If you want to attempt a rebuild and you have some funds and a few necessary tools, the module swap and rebuild has worked for others with access to the Hybrid Automotive Prolong equipment ;).

    I have it and have helped another member rebuild a pack with the Prolong equipment by replacing 2 modules and he’s back on the road :).

    Just another option (y).
     
    #36 Raytheeagle, Mar 28, 2018
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  17. audiodave

    audiodave Active Member

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    Luscious doesn't rebuild batteries, only new or new cells?

    Posted via the PriusChat mobile app.
     
    #37 audiodave, Mar 28, 2018
  18. Raytheeagle

    Raytheeagle Senior Member

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    Someone else recently here wrote that they stopped rebuilding as it wasn’t lasting long;).
     
    #38 Raytheeagle, Mar 28, 2018
  19. Colton1er

    Colton1er New Member

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    They only offered me a new OEM battery for 2950 or new cells for 2750 I believe
     
    #39 Colton1er, Mar 29, 2018
  20. Colton1er

    Colton1er New Member

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    Mind linking a thread to this?
     
    #40 Colton1er, Mar 29, 2018
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