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My 09 Prius Has These Codes Any Ideas?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by DavidRuff, Jun 12, 2020.

  1. DavidRuff

    DavidRuff New Member

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    Vehicle:
    2009 Prius
    Model:
    ----USA----
    My Mechanic Gave Me These Codes. It has 400K Miles Since It Was Bought In 2010. TheCar Sat 3 Weeks Because I Had A New Born In The Family and didn’t leave for 20 days. I’m in Onanack Va. I Need Some Options.
    C1241 - Low Battery Positive Voltage

    C1242 - IG2 Power Source Circuit

    C1259 - HV System Regenerative Malfunction

    C1310 - Malfunction In HV System

    C1406 - Open Or Short In Front Speed Sensor Left Circuit

    P0420 - Catalyst System Efficiency Below Threshold Bank 1

    P0430 - Catalyst System Efficiency Below Threshold Bank 2

    P0441 - Evaporative Emission Control System Incorrect Purge Flow

    P0442 - EVAP System Small Leak Detected

    P0446 - EVAP System Vent Control Circuit

    P0450 - Evaporative Emission Control System Pressure Sensor/Switch

    P0456 - EVAP Control System Leak Detected Very Small Leak

    P1420 - EVAP Canister Small Leak

    P1422 - Fuel Tank Small Leak

    P1450 - Fuel Tank Pressure Sensor

    P3000 - Battery Control System Malfunction

    P3012 - Battery Block 2 Becomes Weak

    P0A1F - Battery Energy Control Module

    P0A7F - Hybrid Battery Pack Deterioration

    P0A80 - Replace Hybrid Battery Pack

    P0AFA - Hybrid Battery System Voltage Low

    P0AC0 - Hybrid Battery Pack Current Sensor 'A' Circuit Range/Performance

    B1421 - Solar Sensor Circuit Passenger Side

    B1424 - Solar Sensor Circuit Driver Side
     
  2. DavidRuff

    DavidRuff New Member

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    ----USA----
  3. edthefox5

    edthefox5 Senior Member

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    Wow only code your missing is a Nuclear Bomb launch code.

    You have a failed hybrid battery.

    use the search forum tab up top and search

    hybrid battery

    to see what everyone and there brother and myself who owns a G2 is going through and what your options are.
     
    #3 edthefox5, Jun 12, 2020
    Last edited: Jun 12, 2020
    Brando714 likes this.
  4. DavidRuff

    DavidRuff New Member

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    ----USA----
    How do I get my other code fix as well?
     
  5. ChapmanF

    ChapmanF Senior Member

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    Sometimes on PriusChat you will get advice to not even read your trouble codes, and assume they might all have been somehow triggered by a seriously low 12 volt battery.

    I don't give that advice, because that's just throwing information away that might have been useful and without knowing what it was.

    This is a different situation, though, because (a) you have already read these trouble codes, and preserved them here, so you would not be throwing that information away, and (b) one of those codes (the first one, C1241) literally suggests that your aux battery voltage might have been very low at some point.

    (Clarification: that's not the only thing C1241 can mean, because it measures voltage at the brake actuator, not at the battery, so it could also mean there was a wiring problem in between. But low voltage system-wide is certainly one thing it can mean.)

    Under these exact circumstances, I don't think it would be unreasonable at all to (a) put a good long charge on the 12 volt battery, (b) clear the codes you have, and (c) give some time to see which ones come back.

    I would not go betting the farm that everything will be fixed and nothing comes back. But it's easy to try and even if half a dozen of those come back, that would have a less daunting look about it.
     
    SFO likes this.
  6. douglasjre

    douglasjre Senior Member

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    I think it means you need a new car
     
    Brando714 likes this.
  7. Brando714

    Brando714 Member

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    For your problem I choose D) All of the above
     
  8. TMR-JWAP

    TMR-JWAP Senior Member

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    Step 1...did you have a check engine light prior to parking the car for that idle period?
    Step 2..get the 12v battery checked and charged up. A marginal 12v battery will die within a few weeks of non-use in a Gen 2 Prius.
    Step 3..reset all the ecu's by having the battery disconnected for a minute or two. (if you removed the battery to charge it, then this is already done) Reconnect the battery and see if the codes come back.
    Step 4..if the HV battery codes come back, it's likely you had one or more modules self discharge during the idle period, which is not uncommon. If the car will start, try to force charge the HV battery for a few minutes to get the weaker modules back to a reasonable state of charge. Then do step 3 again.
     
    Raytheeagle and douglasjre like this.
  9. douglasjre

    douglasjre Senior Member

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    TMR is right