1. The site is migrating to a new server this week, so there will likely be some downtime during that process. You can follow along here for updates.

Low Battery voltage positive Side Code

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Tcman231, Sep 9, 2021.

Tags:
  1. Tcman231

    Tcman231 Junior Member

    Joined:
    Mar 21, 2021
    6
    1
    0
    Location:
    Michigan
    Vehicle:
    2018 Prius
    Model:
    Four Touring
    Hello Everyone, I recently purchased a 2018 Prius 4 Touring 30,000 miles on the vehicle.

    I scanned the Prius with a scanner and it gave me a low battery voltage positive side code C1241 ABS Code

    Now, Unrelated/Related , I had to jumpstart the car 2 times in the last few weeks. the other day i went to accelerate from a stand still car did nothing for a few tries "no electric motor" sound then decided to go
    now this tell me i need a new battery...but why would it mention "abs" with no abs light also no other warning lights or engine light on? again I'm thinking new battery but a new Prius owner like I said.

    Thank you in advance
     
    #1 Tcman231, Sep 9, 2021
  2. FuelMiser

    FuelMiser Senior Member

    Joined:
    Jun 29, 2008
    1,185
    824
    0
    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    Low battery code and jump starting? Battery related, of course. Replace/recondition your 12V battery and keep it on a trickle charger from now on.
     
    #2 FuelMiser, Sep 10, 2021
    jerrymildred likes this.
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    21,581
    14,054
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    C1241 is a code detected by the brake/skid ECU, where it sees that the voltage arriving at its own power supply terminal is lower than it should be.

    It doesn't always have to mean a problem with the 12 volt battery, of course. Because the voltage is detected low at the brake ECU, the problem could in theory be anywhere in the wiring or connectors leading to that ECU. That's why the code is specific, to make sure a diagnostician has enough info to consider all the possible causes.

    On the other hand, in cases where you know your 12 volt battery has been low enough to require multiple jump starts, there's no need to wander too far down the maze of other possible causes for the C1241.
     
    #3 ChapmanF, Sep 10, 2021
    JohnPrius3005 likes this.
  4. Tcman231

    Tcman231 Junior Member

    Joined:
    Mar 21, 2021
    6
    1
    0
    Location:
    Michigan
    Vehicle:
    2018 Prius
    Model:
    Four Touring
    I knew they were related of course but didn't understand the abs part I guess ha ha I'm still learning about this whole deal here if were a regular gasoline engine .. you know check the alternator and get a battery if it was charging lol thank you much !
     
    #4 Tcman231, Sep 10, 2021
    Last edited by a moderator: Sep 10, 2021
  5. CooCooCaChoo

    CooCooCaChoo Active Member

    Joined:
    Jan 7, 2015
    857
    483
    0
    Location:
    Cow-lee-fornia
    Vehicle:
    2023 Prius
    Model:
    LE
    Dead or dying 12v battery causes a lot of weird problems. Because you live in Michigan, I would replace it before it starts snowing. The cold weather reduces the capacity of the battery.
     
    #5 CooCooCaChoo, Sep 10, 2021
    Tcman231 likes this.
  6. Tcman231

    Tcman231 Junior Member

    Joined:
    Mar 21, 2021
    6
    1
    0
    Location:
    Michigan
    Vehicle:
    2018 Prius
    Model:
    Four Touring
    thank you! yes definitely what I was thinking as well...still learning something new every day about the Prius lol
     
    #6 Tcman231, Sep 10, 2021
    Last edited by a moderator: Sep 10, 2021
  7. Mendel Leisk

    Mendel Leisk Patron saint of newly poured sidewalks

    Joined:
    Oct 17, 2010
    52,383
    37,035
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    For starters check it’s voltage, with a volt meter, car off.
     
    #7 Mendel Leisk, Sep 10, 2021
  8. Tcman231

    Tcman231 Junior Member

    Joined:
    Mar 21, 2021
    6
    1
    0
    Location:
    Michigan
    Vehicle:
    2018 Prius
    Model:
    Four Touring
    just finally did that … 11 volts
     
    #8 Tcman231, Sep 10, 2021
    Mendel Leisk likes this.
  9. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    21,581
    14,054
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Wouldn't hurt to put a charger on that animal.
     
    #9 ChapmanF, Sep 10, 2021
(You must log in or sign up to post here.)
Loading...
Similar Threads - Battery voltage positive
  1. Toehee

    voltage isolation fault-insurance claim

    Toehee, Aug 30, 2023, in forum: Gen 4 Prius Care, Maintenance and Troubleshooting
    Replies:
    2
    Views:
    342
    douglasjre
    Aug 30, 2023
  2. beef jiggles

    2017 Prius - P065714 code after jumping battery

    beef jiggles, Jul 7, 2023, in forum: Gen 4 Prius Care, Maintenance and Troubleshooting
    Replies:
    21
    Views:
    1,713
    beef jiggles
    Jul 13, 2023
  3. Wraiththe

    Hybrid battery temp sensor or warning light?

    Wraiththe, Jul 3, 2023, in forum: Gen 4 Prius Care, Maintenance and Troubleshooting
    Replies:
    1
    Views:
    474
    bisco
    Jul 3, 2023
  4. Carsten

    Car died - battery, ICS, water pump, t-stat combo?

    Carsten, Jul 3, 2023, in forum: Gen 4 Prius Care, Maintenance and Troubleshooting
    Replies:
    9
    Views:
    1,347
    Carsten
    Sep 19, 2023 at 4:30 AM
  5. kortheo

    Low 12-volt battery - questions about recharging

    kortheo, Mar 27, 2023, in forum: Gen 4 Prius Care, Maintenance and Troubleshooting
    Replies:
    8
    Views:
    919
    bisco
    Mar 28, 2023