C1391 Code, Brake + ABS + Cabin Alarm = No Brakes

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Lamp1998, Sep 1, 2021.

  1. Lamp1998

    Lamp1998 New Member

    Joined:
    Sep 1, 2021
    1
    0
    0
    Location:
    Miami
    Vehicle:
    2010 Prius
    Model:
    ----USA----
    Hello ! I had the same problem abs +cabin alarm + light abs and traction light. I read this blog, I changed the PUMP part # 47070-47060 Pump Assy. I bought the new part in the Toyota Dealer. It was a little difficult but not impossible. I’m giving thanks to God. I almost change the brake booster & master cylinder, but it’s not necessary at least in my case. The abs light was turn on since I bought the car, but until a few days I lost the brakes and start the cabin alarm. The part price is around 600$. If someone need help let me know to send you some videos from YouTube that were very helpful for me.

    The code was a C1391… before the cabin alarm stars to buzz
     
    #1 Lamp1998, Sep 1, 2021
    Last edited by a moderator: Sep 1, 2021
  2. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    8,023
    4,063
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    FYI, the part number you quote is the Brake Booster Pump Assembly for the Gen 3 Prius, but you have tagged onto a Gen 1 post in the Generation 1 forum.

    While there might be more similarities between the Gen 1 and the Gen 3 than the Gen 2 all these generations have differences in this area – some more than others.

    You should take care to make sure you post in the correct forum when making future posts.
     
    #2 dolj, Sep 2, 2021
    Last edited: Sep 2, 2021
    Rick Hoover likes this.
  3. Rick Hoover

    Rick Hoover Junior Member

    Joined:
    Aug 2, 2012
    4
    0
    0
    Location:
    St. Petersburg, FL
    Vehicle:
    2005 Prius
    Model:
    Two

    Hello, has the issue come, or has your fix remained?

    Did you not need to do a lateral solenoid calibration since you didn't change the master cylinder?
     
    #3 Rick Hoover, Mar 23, 2022
  4. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    25,678
    16,775
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    ... linear ...
     
    #4 ChapmanF, Mar 23, 2022
(You must log in or sign up to post here.)