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2011 Prius hybrid system failure light on

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by michelle puglia, Sep 24, 2018.

  1. michelle puglia

    michelle puglia New Member

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    Vehicle:
    2011 Prius
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    ----USA----
    I have a 2011 Prius with 93k miles. Yesterday I started car after and the light came on and it sounded really rough. I started to back out. I ended up turning car off and back on. Light still on and engine light on. It sounded fine so I started to drive to store. Going about 40-45mph, car suddenly decelerated to about 10mph and wouldn’t let me go any faster to move out of way. Hard to turn, brake, it was like it had stopped functioning while moving. I finally was able to stop the car and turn off. Turned on 30min later and only ck engine light on. Drove fine as if nothing happened.

    Have noticed the battery symbol hasn’t been fully charging recently.

    Drove to dealer this morning. Somehow ck engine light was no longer on and they can’t get any codes and said they checked both batteries and they are fine. They want to keep car overnight and let tech drive home to see if it will duplicate.

    Any ideas? How can it fail so badly one day and be undetectable the next? I’m afraid to drive it. I’m lucky I wasn’t in an Accident yesterday.
     
  2. tankyuong

    tankyuong Senior Member

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    They should have the codes once the cel is illuminated
     
  3. bisco

    bisco cookie crumbler

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    did they keep the car?
     
  4. bisco

    bisco cookie crumbler

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    maybe a clogged egr/intake, or bad head gasket? inverter pump? hybrid battery module?
     
  5. michelle puglia

    michelle puglia New Member

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    2011 Prius
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    ----USA----
    They had the car for 2 days and had tech drive home connected to the computer. Could not get it to duplicate anything. No codes. Toyota gave them a few things to try and all normal. Their one possibility is a fuel pump that might be going bad. Tested fine. I got car delivered back to me and battery showed not fully charged, but ran fine. I’m still thinking it is one of the batteries, but they said they teSt fine.

    Looking at the bill it says multiple codes in history. P3191 p0a0f and c2315??? They told me no codes came up.

    Might be taking to another Toyota dealer.
     
  6. bisco

    bisco cookie crumbler

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    call them, and ask what the codes mean. did you pay for the testing?
     
  7. bisco

    bisco cookie crumbler

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    p3191 and poaof mean the engine failed to start and poor engine power. possible culprit fuel pump, or maybe you got bad gas. was your gas level low?
     
  8. bisco

    bisco cookie crumbler

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    also, oil overfill can be a problem. had you had it changed recently?
     
  9. bisco

    bisco cookie crumbler

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    the c2315 is more problematic, i can't find much definitive info.