1. Attachments are working again! Check out this thread for more details and to report any other bugs.

2009 touring 4. Many codes. Very poor milage.

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Pauldow, Feb 14, 2022.

  1. Pauldow

    Pauldow New Member

    Joined:
    Feb 14, 2022
    3
    0
    0
    Location:
    Florida
    Vehicle:
    2009 Prius
    Model:
    Four Touring
    2009 Prius 110k miles . Many codes.
    P 1116 p1129
    C1121 c1300 c1311 c1343 c1351
    B1271
    U0293 u0124 u0126 u0073 u0123

    Was told I by non Prius dealer who just did front brake job I need brake module .
    These codes did not go away with front brake new rotor pads caliper bleed.
    Mileage is horrible... 36 mpg .
    Thanks for any enlightenment.
     
    #1 Pauldow, Feb 14, 2022
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,813
    49,432
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    that's a lot of codes. are they from tech stream? any history on the car?
     
    #2 bisco, Feb 15, 2022
    Pauldow likes this.
  3. Pauldow

    Pauldow New Member

    Joined:
    Feb 14, 2022
    3
    0
    0
    Location:
    Florida
    Vehicle:
    2009 Prius
    Model:
    Four Touring
    Hi thanks for reply. Don't know what device found the codes. The codes were given me by shop that did front brake job. We purchased car new in 2009. It has had water cool pump replaced. The pump that helps cool battery. These codes accompany very poor mileage and querkiness of car now. For instance dash is blank or car will not shut off sometimes.
    Car runs less frequently on big battery at low speeds. And it does not coast and or free wheel like it used to.
     
    #3 Pauldow, Feb 19, 2022
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,813
    49,432
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    if you don't diy, i would have a dealer look at that brake work and run the codes. maybe the pads are dragging.
    it is possible that the brake actuator is failing, but that would not produce the symptoms you describe.

    but when they say brake module, do the mean the ecu computer? i suppose that could cause the brakes to close incorrectly, idk.

    usually, with the actuator, you get the brake pump buzzing noise more and more frequently.
     
    #4 bisco, Feb 19, 2022
  5. Pauldow

    Pauldow New Member

    Joined:
    Feb 14, 2022
    3
    0
    0
    Location:
    Florida
    Vehicle:
    2009 Prius
    Model:
    Four Touring
    Thanks for info. Was told because brake fluid accuatorwas malfunctioning it was throwing codes .brakes work ok now but poor mileage and dash abs vsc and about all other trouble indicators are lit.
    Dash goes blank some times other times motor will not turn off and must hold and push routine
    Taking to dealer seems inevitable
     
    #5 Pauldow, Feb 25, 2022
  6. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,813
    49,432
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    check the 12v health and connections
     
    #6 bisco, Feb 25, 2022
(You must log in or sign up to post here.)