DTCs after Door Swap

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by miscrms, Jul 11, 2025 at 1:22 AM.

  1. miscrms

    miscrms Plug Envious Member

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    Took a hard, but low speed hit on the drivers side door of our 2017 v. No airbag deployment, and was able to drive it home. No obvious errors or dash warnings at the time.

    Located a whole door from a 2012 at a local junk yard, and after much prodding and prying, removed the crushed door and swap in the new. All electricals from the replacement door were intact except the window switches, which I swapped over.

    On startup I now have a hybrid system warning, but otherwise car seems to start and move fine. Active DTCs are;

    Hybrid P3107 - airbag ecu to power management, believe this is causing the hybrid warning

    SRS B1695 - side airbag sensor left

    Body B126A - remote start

    I’m guessing the airbag sensor or wiring on the “new” door is bad? All other controls on the door seem ok so far, windows, door locks, etc. planning to try swapping the sensor and checking the continuity tomorrow, anything else I should look at?

    Thanks in advance!
    Rob
     
    #1 miscrms, Jul 11, 2025 at 1:22 AM
  2. ChapmanF

    ChapmanF Senior Member

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    I don't believe any airbag wiring or sensors are in the door, but there could have been some wiring or connections at the kick panel or B pillar you disturbed in the course of the job. Bright yellow is the usual color for wiring that's part of the airbag system.
     
    #2 ChapmanF, Jul 11, 2025 at 10:49 AM
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  3. BiomedO1

    BiomedO1 Senior Member

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    I don't have a wiring diagram; but are you sure that the 2012 door harness is that same as your 2017 internal door harness?
    You can try disconnecting it (electrically), clear the codes and see if they go away - if the problem is indeed your replacement door.
     
    #3 BiomedO1, Jul 11, 2025 at 11:15 AM
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  4. Air_Boss

    Air_Boss Senior Member

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    There is an accelerometer (side airbag sensor) in the door, part of the SRS system.
     
    #4 Air_Boss, Jul 11, 2025 at 11:17 AM
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  5. ChapmanF

    ChapmanF Senior Member

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    Are you sure it's in the door and not on the B pillar?
     
    #5 ChapmanF, Jul 11, 2025 at 11:34 AM
  6. miscrms

    miscrms Plug Envious Member

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    Thanks everybody! This must be it at the bottom of the door. It’s a 2-wire connection, anyone know if it’s something you can ohm out or is it a digital interface? I don’t know how hard the donor car was hit, maybe these are single use and have to be replaced after tripping?

    I’ll try to play around with it this afternoon and let you know what I find!

    Rob

     
    #6 miscrms, Jul 11, 2025 at 11:37 AM
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  7. ChapmanF

    ChapmanF Senior Member

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    Well isn't that weird!? In my 2010 I knew I had seen it on the B pillar (it's R9 on the diagram) and not in the door.

    [​IMG]

    I wonder what model year that change happened? I've learned my new thing for today.
     

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    #7 ChapmanF, Jul 11, 2025 at 12:18 PM
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  8. miscrms

    miscrms Plug Envious Member

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    Update;

    Swapped the sensor over from the original door to the replacement, and the DTCs seem to have resolved. The airbag B1695 code went from current to history, but the P3107 was still showing current until I manually cleared both. I suspect the B126A is related to a third party remote start and unrelated. Will have to see if everything stays clean now, but it was coming back almost immediately before.

    The two sensors have the same form factor and connector, but do have different part numbers that seem to be different for the early and late models. The 2012 sensor is 89831-48020, and the 2017 is 89831-52040. The 2012 ohms out at ~400k, while the 2017 was ~ 1M. So not sure if the 2012 sensor was bad or just not compatible.

    Rob

     
    #8 miscrms, Jul 11, 2025 at 4:11 PM
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  9. ChapmanF

    ChapmanF Senior Member

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    Somehow I missed that this was a v thread. Maybe the liftback had the sensor on the pillar and the v always had it on the door?
     
    #9 ChapmanF, Jul 11, 2025 at 6:20 PM
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