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299,000 miles: multiple codes

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Hanging on with 286k, Nov 7, 2022.

  1. Hanging on with 286k

    Hanging on with 286k Junior Member

    Joined:
    Jan 5, 2021
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    Location:
    Ontario, Canada - 300,000+ miles
    Vehicle:
    2007 Prius
    Model:
    II
    P0172,
    P0300, p0301, p0302, p0304
    P3191 and P3193

    Hello. Multiple codes were pulled in June when I thought red triangle was the Hybrid Battery. But no! Battery place said she is fine, just need to look at the engine.

    P0172

    I just had the spark plugs replaced with Iridium. Not sure if I should hang on to this car, but I am so attached to her. Original owner, lots of family memories in this car before divorce. 299,000 + miles.

    I brought the car to the mechanic today because the red triangle showed up intermittently a few days ago. Of course it went off and stayed off when she heard I was taking her to the mechanic! He says he can't do much if the warning light is off and that it could be as small as a door ajar.

    I know this isn't a lot of info for you guys to go on, open to any conclusions/guesses/ideas.

    Thanks in advance for reading.
     
  2. bisco

    bisco cookie crumbler

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    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    any symptoms?

    how is the oil level?
     
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  3. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
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    IV
    Looks like a story of running too rich (P0172), with probably noticeable symptoms of the engine rockin' and rollin' (P030x), leading to balky starting (P3191, reported as P3193 if there isn't much fuel in the tank at the time).
     
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  4. Hanging on with 286k

    Hanging on with 286k Junior Member

    Joined:
    Jan 5, 2021
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    Location:
    Ontario, Canada - 300,000+ miles
    Vehicle:
    2007 Prius
    Model:
    II
    Thank you for responding. My mechanic told me to check it weekly as it has been eating oil for some time now. Oil was checked by mechanic yesterday and was fine.

    Appreciate the suggestion.
     
  5. Hanging on with 286k

    Hanging on with 286k Junior Member

    Joined:
    Jan 5, 2021
    26
    16
    0
    Location:
    Ontario, Canada - 300,000+ miles
    Vehicle:
    2007 Prius
    Model:
    II
    This makes sense. Thanks for responding so quickly.
     
  6. Hanging on with 286k

    Hanging on with 286k Junior Member

    Joined:
    Jan 5, 2021
    26
    16
    0
    Location:
    Ontario, Canada - 300,000+ miles
    Vehicle:
    2007 Prius
    Model:
    II
    Hello folks. Update. We got our first major snow. I park on the street. This morning in 20 F I cleaned the snow off of the car and ran the heat for 3 minutes, while parked to help defrost the windshield. No warning lights came on.

    Next, I drive the car 20 minutes and hear a fan come on along the way. I know that is not good. I park and get the red triangle, ABS, the whole thing. I use my FIXD scanner and see I pulled P3191 today. Yesterday it was P0420 and mileage went down quickly to 33 from 45. This happens this time of year for a week or two. Could it be due to the gas station changing to winter gas ?

    At 299,000 + miles I am unsure if I should put more money into the car. I have an appointment to put on my winter tires and change the engine air filter and serpentine belt this week. I guess I wait and see if all of that helps at all.

    Original HV battery, owner. No battery codes have been pulled and the HV battery guys in June said the battery was fine.

    Any feedback is appreciated. I am reluctant to trade up but also need reliable transportation to regularly visit family a 3-hour drive away. Thanks in advanc for reading this.
     
  7. Hanging on with 286k

    Hanging on with 286k Junior Member

    Joined:
    Jan 5, 2021
    26
    16
    0
    Location:
    Ontario, Canada - 300,000+ miles
    Vehicle:
    2007 Prius
    Model:
    II
    Update: I have been having low mpg (32mpg) and it sounded like a fan was coming on with the gas engine.

    Took to mechanic today to put on my winter tires. We did a few things for p3191.

    • Checked all fluids. Oil was down 1/2 a quart.
    • I used my FIXD scanner to check auxiliary battery, 12.2 v
    • Next we replaced the engine air filter, cleaned the MAF intake (no leaves there!) and cleaned the throttle body. Also replaced the serpentine belt as recommended by other shop.

    I drove on the highway and it was smooth. Plus, instead of lower mpg due to winter gas in Canada ( a thing) and winter tires.... I was getting 55mpg! I haven't seen that in years. I have been averaging 45 summer/35-40 winter.

    I will test on a 1 hour highway commute tomorrow and if all goes well may drive 3 hours to see family on Thursday. Fingers crossed.

    Thanks to everyone who replied.
     
  8. edthefox5

    edthefox5 Senior Member

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    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Oil was down half a quart. You will be walking soon unless you can keep oil in that car. The more this car eats oil the more this car will eat oil. Don't leave it up to a mechanic to check it your now in emergency monitoring lol...do it your self.
    if i was you I would check it everyday before starting the car.
    Super easy takes 45 seconds. Unless you have plans for the engine blowing up. And they do blow up they usually throw the #2 piston out the side of the engine when oil starved. Seen alot of those on this site,

    Prius gets bad mileage in the winter from the cold. Many people have put cardboard in front of the rad to help keep the engine and inverter warm in addition to an engine block heater. Running the heat exacerbates this mileage issue especially before the car is even warmed up.

    Also pretty sure your car is throwing hybrid codes your FIXD is not capable of pulling them and neither is the mechanics I bet.

    here's some threads from the SEARCH FORUMS link about poor mileage in the winter.

    https://priuschat.com/search/357474604/?q=bad+mileage+in+the+winter&t=post&o=relevance
     
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  9. mr_guy_mann

    mr_guy_mann Senior Member

    Joined:
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    Location:
    NJ-USA
    Vehicle:
    2006 Prius
    Model:
    Four
    FIXD is a "generic OBD2" scantool device and app. It can only connect to the engine computer (ECM). A Gen2 Prius has 15 or 16 ecu's ("computers") total.

    If you have other warning lights (and a fan coming on "behind you"), then I would expect there to be codes in other systems (ABS, hybrid control, high voltage battery)

    You might want to look at this thread that reviews scantool apps and devices- several are capable of scanning all systems on a Gen2.
    https://priuschat.com/index.php?posts/3290690

    Posted via the PriusChat mobile app.
     
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