Cleared check engine light by battery disconnect now locked out

Discussion in 'Prius v Technical Discussion' started by steppin, Aug 2, 2025 at 1:18 AM.

  1. steppin

    steppin New Member

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    I replaced water pump and then removed negative battery cable to clear the code.. now all my warning lights all stay lit up on the dash and it won’t let me place car into drive or reverse.. I have tried reset this several times by same procedure with no luck.. I know I must of re set all defaults and lost communication with computer. Now I can’t even move the car.. how do I get this all synced again?
     
    #1 steppin, Aug 2, 2025 at 1:18 AM
  2. bisco

    bisco cookie crumbler

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    i think you are going to have to scan for trouble codes to find out why it is complaining
     
    #2 bisco, Aug 2, 2025 at 9:26 PM
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  3. ChapmanF

    ChapmanF Senior Member

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    i think what bisco thinks
     
    #3 ChapmanF, Aug 2, 2025 at 9:35 PM
  4. steppin

    steppin New Member

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    It had a code .. is why I had to replace water pump
     
    #4 steppin, Aug 2, 2025 at 10:21 PM
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  5. bisco

    bisco cookie crumbler

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    if you have trouble lights, you have more codes. could be related to the pump or the install.
    use tech stream or autel
     
    #5 bisco, Aug 3, 2025 at 2:10 PM
  6. steppin

    steppin New Member

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    Not more codes .. just everything on instrument panel is all lit up and I can’t get into drive or reverse.. it locks me out
     
    #6 steppin, Aug 3, 2025 at 3:33 PM
  7. bisco

    bisco cookie crumbler

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    load test the 12 volt, and check the connections, especially negative to ground.
     
    #7 bisco, Aug 4, 2025 at 2:53 PM
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  8. BiomedO1

    BiomedO1 Senior Member

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    Are you getting the green 'ready' lamp? It doesn't seem reasonable that you don't have any more codes and yet the car won't go into gear. Why would the ECU lock you out if everything is READY????????
    Use a better OBD2 scanner....
     
    #8 BiomedO1, Aug 4, 2025 at 3:01 PM
  9. steppin

    steppin New Member

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    Yes have green ready light.. and green light at start button but when I put into any gear it immediately turns amber and locks me out .. once I set parking brake again that light will turn back to geen
     
    #9 steppin, Aug 4, 2025 at 3:53 PM
  10. Air_Boss

    Air_Boss Senior Member

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    Did you remove and replace the HV interlock when doing the water pump service?
     
    #10 Air_Boss, Aug 4, 2025 at 5:34 PM
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  11. steppin

    steppin New Member

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    Yes .. the orange plug
     
    #11 steppin, Aug 4, 2025 at 6:36 PM
  12. steppin

    steppin New Member

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    Ya know what.. when I plugged it back in.. I did t know to slide it to the right until it clicks.. seen that on another YouTube video.. everything works fine now… thank you guys so much for your time and input.. these forums rock
     
    #12 steppin, Aug 4, 2025 at 7:10 PM
  13. bisco

    bisco cookie crumbler

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    good call AB!
     
    #13 bisco, Aug 4, 2025 at 8:34 PM
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  14. BiomedO1

    BiomedO1 Senior Member

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    a better OBD2 would've told you no traction battery power.
     
    #14 BiomedO1, Aug 4, 2025 at 9:01 PM
  15. ChapmanF

    ChapmanF Senior Member

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    If the orange plug handle wasn't slid to the right, the code was P0A0D for the safety interlock circuit (that handle is part of that circuit). So reading the code would have identified the issue with no need to guess.
     
    #15 ChapmanF, Aug 4, 2025 at 9:08 PM
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  16. steppin

    steppin New Member

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    Ok thx… that would of been my next move.. appreciate you guys
     
    #16 steppin, Aug 4, 2025 at 9:20 PM
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