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2013 Prius suddenly displays many DTC codes

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Jskoiz, Jan 6, 2024.

  1. Jskoiz

    Jskoiz New Member

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    Hi there my 2013 Prius V with 165k miles has been fine never show issues before and today suddenly displayed check hybrid system and began running differently. The battery has been changed around 110k miles and I have consistently been getting 40-45mpg. I’m not sure where to begin troubleshooting with these code and would love some insight:

    C1259 - Speed Wheel RF Comparison Failure
    C1310 - Open or Short in Active Brake Booster Circuit
    B1801 - Short in Driver Side Squib Circuit
    P0198 - Engine Oil Temperature Sensor Circuit High
    P0A94 - DC/DC Converter Performance
    P0A7A - Generator Inverter Performance
    P324E - MG ECU Power Relay Intermittent
    P0852 - Park / Neutral Switch Input Circuit High


    I can’t seem to share links or upload pictures but I have the report link from the vintel scanner and pictures from the other diag tool
     
    #1 Jskoiz, Jan 6, 2024
  2. bisco

    bisco cookie crumbler

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    you need 5 posts for links and the picture upload is not working.

    can you describe how it is running differently?

    almost seems like rodents chewing the wiring harness, but i'd check the 12 volt health and confirm your scanner is correct for a prius.
     
    #2 bisco, Jan 6, 2024
  3. Jskoiz

    Jskoiz New Member

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    It seems like it wont go past 2nd gear starts topping out around 35 mph. The only thing that has changed is yesterday I tightened the 12mm bolt above the knuckle joint on the steering column, there was a noticeable rattle and found that to be a solution to the problem, besides that havent experienced any odd issues.

    I have a VinTel by VinLogix scanner as well as a Snap On Solus Edge diagnostic tool, not sure if these are appropriate.


    here is the link to the VinTel report just replace the ō with o
    api.govintel.cōm/vintelcustomer_api/rest/v3/dsrUrl/682a0f6b-a4e5-443e-8f8b-7570c0f443b9


    Images from the solus edge scanner, replace ō with o
    imgur..cōm/a/0LnJmQz
     
    #3 Jskoiz, Jan 6, 2024
  4. Jskoiz

    Jskoiz New Member

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    Alright went back in with the diag tool and now it seems just these are present:

    Diagnostic Trouble Codes (DTC)
    POA7A - Generator Inverter Performance
    P324E - MG - ECU Power Relay Intermittent Circuit
    P0A94 - DC / DC Converter Performance

    And got smore details:
    Freeze Frame Data - DTC
    Parameters (-3) (-2) (-1) (00) (+1)
    DTC N/A N/A N/A N/A N/A
    Detail Code 1 N/A N/A N/A N/A N/A
    Detail Code 2 N/A N/A N/A N/A N/A
    Detail Code 3 N/A N/A N/A N/A N/A
    Detail Code 4 N/A N/A N/A N/A N/A
    Detail Code 5 N/A N/A N/A N/A N/A
    Engine Coolant Temp (°F) N/A N/A N/A 194 194
    Engine Revolution (RPM) N/A N/A N/A 2688 2816
    Freeze Frame Data - Vehicle Spd (mph)
    Parameters (-3) (-2) (-1) (00) (+1)
    Vehicle Spd (mph) 40 41 42 6 42
    Engine Run Time (s) 1568 1568 1569 1569 1569
    +BV (V) 13.44 13.42 13.42 13.34 13.48
    Accel Pedal Pos #1 (%) 44.3 51.8 52.2 52.9 45.9
    Accel Pedal Pos #2 (%) 60.4 67.8 68.2 69.0 62.0
    Ambient temperature (°F) 75 75 75 75 75
    INTAKE AIR TEMPERATURE (°F) 96 96 95 95 95
    DTC Clear Warm Up 255 255 255 255 255
    Freeze Frame Data - Battery Block Vol -V07(V)
    Parameters (-3) (-2) (-1) (00) (+1)
    Battery Block Vol -V07(V) 12.85 12.87 12.94 12.99 16.32
    Battery Block Vol -V08(V) 12.85 12.90 12.92 12.97 16.34
    Battery Block Vol -V09(V) 12.82 13.02 12.90 12.99 16.34
    Battery Block Vol -V10(V) 12.80 13.04 12.90 12.97 16.32
    Battery Block Vol -V11(V) 12.90 12.99 12.87 12.85 16.34
    Battery Block Vol -V12(V) 12.99 12.99 12.87 12.87 16.37
    Battery Block Vol -V13(V) 12.82 12.85 12.97 12.99 16.37
    Battery Block Vol -V14(V) 12.72 12.80 12.92 12.92 16.41

    Then another screen shows:
    • V07: 15.68 V
    • V08: 15.71 V
    • V09: 14.51 V
    • V10: 14.48 V
    • V11: 15.78 V
    • V12: 15.80 V
    • V13: 15.12 V
    • V14: 15.02 V

    Im not sue if this is easier to understand here are the pics from the diag tool:

    change ō to o:
    imgur.cōm/a/NUS4de9
     
    #4 Jskoiz, Jan 6, 2024
    Last edited: Jan 6, 2024
  5. ChapmanF

    ChapmanF Senior Member

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    Right there's a pretty good example why it's no good to use Mr. Google to find out what trouble codes mean, especially when they are in manufacturer-defined ranges like C1. You'll get completely bogus "meanings" the codes would have in some different car.

    [​IMG]

    In a Prius, C1259 ("HV System Regenerative Malfunction", from the Electronically Controlled Brake system) and C1310 ("Malfunction in HV System", from the Vehicle Stability Control) are both very familiar codes that usually show up together. All they mean is that those two systems have noticed other trouble codes being reported by the hybrid system. So they just mean to go look at those other codes.

    That's an airbag system code. It won't be related to how the car drives, or the other hybrid system codes, but it would be worth looking into.

    That one is a puzzle. As a P0 code, it should have one fortune cookie that applies to all cars, and it does seem to be about an Engine Oil Temperature Sensor according to SAE. So why is that a puzzle? Because I don't think a Gen 3 Prius engine even has an engine oil temperature sensor. And there is nothing about a P0198 in the Gen 3 repair manual at all ... at least not in the oldish 2010 edition floating around the net.

    Here is a weird thread in another forum where somebody with a 2010 Camry said it reported a "P0198" from the airbag module. Complete with a screenshot where the scantool sho'nuff shows that code coming from the airbag module.

    That's a should-never-happen kinda thing; P codes are supposed to be from the Powertrain, and airbag modules ought to give B codes, like the B1801 you also have. The poor OP in that other thread got a bunch of responses saying "that code's not from the airbags, those would be B codes, not a P code", even after including a screenshot. :rolleyes:

    So I wonder if some Toyota airbag modules have a firmware bug that makes P0198 a code they can report. Does the scan tool you're using show which ECU it thinks each code came from?

    These are all perfectly cromulent hybrid-system codes, and you should talk with a dealer; the codes may qualify you for free repair under the inverter warranty extension that was originally for 15 years, unlimited miles, and was more recently extended to 20 years.

    The P0852 is an odd one out, and simply has to do with the P button on the dash and its wiring. It's not a very complicated circuit and shouldn't be hard to get to the bottom of.
     
    #5 ChapmanF, Jan 6, 2024
  6. Brian1954

    Brian1954 Active Member

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    Disregard the trouble codes that are historical (B1801 & P0198).

    The C1259 and C1310 just mean that there is a trouble code in the HV (hybrid vehicle) ECU. Go look over there.

    The HV ECU is reporting some trouble codes that could be caused by the inverter assembly. Don't clear the trouble codes. Take the car to a Toyota dealership. The inverter assembly is covered by an extended warranty, so you have a good chance of getting your car fixed at no cost to you.

    Edit: ChapmanF replied as I was typing my response. He is one of the best resources on this forum. He knows his "stuff". Pay attention to what he says.
     
    #6 Brian1954, Jan 6, 2024
    Last edited: Jan 6, 2024
  7. Jskoiz

    Jskoiz New Member

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    Thank you for all the detail in your responses , for some reason my previous post which had a more specific update is in queue to be approved by a moderator but it seems to be similar to issues with the inverter j0v recall which I researched more I just dropped it off at the dealership and they are gonna get it in the shop at the next appointment but they confirmed the Prius is covered under this bulletin once they confirm for themselves the codes I found.
     
    #7 Jskoiz, Jan 6, 2024
    Brian1954 likes this.
  8. Air_Boss

    Air_Boss Senior Member

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    Inadvertent pinched wires when the steering shaft knuckle was tightened?
     
    #8 Air_Boss, Jan 7, 2024
    Leadfoot J. McCoalroller likes this.
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