Ice not starting

Discussion in 'Gen 2 Prius Technical Discussion' started by Quinton_Hall, Jun 5, 2021.

  1. Quinton_Hall

    Quinton_Hall Junior Member

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    Please see error codes. Engine sometimes will not start. Replaced spark plugs, 12v battery, PCV, air filter, cleaned MAF and throttle body. Car was past die for tune up and 12v battery negative terminal I'm guessing was leaking since it was badly corroded.

    Car has.about 280k miles. Have owned it most of those miles.

    When engine does not start the red triangle comes on along with most of not all warning lights on dash. Only way I can get to work again is to clear codes, turn off car and then turn back on. Requires all three steps to get engine to crank again.

    Is the C0300 code a engine miss? If so how do I know which cylinder is misfiring?
     

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  2. TMR-JWAP

    TMR-JWAP Senior Member

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    I'm going to go out on a limb here and question the validity of all those codes. I don't think any of them are even possible Prius codes.

    Perhaps whatever you're using for code reading isn't speaking the correct language to understand Prius diagnostics? Of course, this assumes you're working on a Gen 2 Prius, since it's a Gen 2 forum.
     
  3. Quinton_Hall

    Quinton_Hall Junior Member

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    For Bluetooth reader and I was using Prius doctor app on Android. Any better recommendations to read codes? And thank for for.yoir reply.
     
  4. Quinton_Hall

    Quinton_Hall Junior Member

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    And yes it's a 2nd gen 2008 Prius. About 280k miles on it now. Had about 70k on it when I got it.
     
  5. SFO

    SFO Senior Member

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    Never heard of prius doctor, or of anyone using it before. Doesn't look like it's been updated in 3 years?

    Instead you should try Dr Prius (Dr Hybrid), or Hybrid Assistant. https://apkpure.com/dr-prius-dr-hybrid/com.nexcell.app

    If you can handle the learning curve there is also an App called Torque, though not that user friendly. Many others prefer using a "mini-vci cable" (20usd) and Techstream (dealer technician software) installed on a windows device.

    Maybe @PriusCamper has some other recommendations worth trying out.
     
  6. sam spade 2

    sam spade 2 Senior Member

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    The first thing you need to do is get a voltmeter and check the battery voltage at the battery and at the "jump points" when the failure occurs.
    Just because the battery is new does not necessarily mean that it ever was fully charged or that the main cable connections are solid.

    Given your car's age, there could be a LOT of places that a corroded or loose electrical connection could be causing an intermittent problem.
     
  7. ChapmanF

    ChapmanF Senior Member

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    I could find the pending P1116 in a 2006 manual, but not the others. The P1116 is related to the coolant thermos; I don't think it would be the cause of a no-start.
     
  8. BiomedO1

    BiomedO1 Junior Member

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    DTC P0300 is an intermittent misfire code.
    Please fill out car details in your Bio.. How many miles on it, has it ever been in a front end collision? The battery and connectors are a good place to start - also check and clean all your ground points; especially to the engine. Pull-off the plastic covers and check the wiring harness for rodents gnawing on your wires.
    How were your spark plugs; did any of them look like they were running lean or rich? An intermittent ignition coil can cause a P0300 error code. If your just throwing money at it; replace all four; but check the harness and connectors.
    The P1116 code is the coolant temperature sensor, engine not getting to operating temperature - will cause lean/rich fuel burn. The car's CPU can't determine proper combustion mixture; if it doesn't get the proper information. This could be due to poor ground points.
    Check your fuel pressure, on your fuel rail - you may have put some bad gas in, clogging your fuel filters.

    Good Luck..
     
    #8 BiomedO1, Jun 6, 2021
    Last edited by a moderator: Jun 6, 2021
  9. Quinton_Hall

    Quinton_Hall Junior Member

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    Couldn't fiquired out how to read codes with Dr Prius. Was able to check HV battery with Dr Prius.
    Going to try torque again. Have used in past but had problems with it connecting yesterday. Thx

    Thx. I'm going to try some different apps. If some are incorrect maybe none of the codes are right.
     
    #9 Quinton_Hall, Jun 6, 2021
    Last edited by a moderator: Jun 6, 2021
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  10. TMR-JWAP

    TMR-JWAP Senior Member

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    P1116 is the Coolant heat storage tank outlet temperature sensor, not engine coolant temperature. But considering the total lack of accuracy of the other "codes", I would put no faith in the accuracy of this one either.
     
  11. OBJUAN

    OBJUAN Member

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    wasn't the ins cluster caps causing a similar problem?
     
  12. Quinton_Hall

    Quinton_Hall Junior Member

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    Ordered a cable

    Going to try installing techstream on my surface pro tablet and check further.
     
  13. Quinton_Hall

    Quinton_Hall Junior Member

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    Got the cable and software installed on a old XP netbook. Any ideas what all these mean
     

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  14. Raytheeagle

    Raytheeagle Senior Member

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    Click on the snowflakes for more info ;).

    Post the screen shots from those sub menus and it'll give more data:).

    Getting closer to an answer though(y).
     
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  15. dolj

    dolj Senior Member

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    B1421

    Don't worry about this code unless you scanned the car in bright sunlight. In any case, it is the least of your concerns at this point.


    C2121/3/4

    These codes are "No Signal from Transmitter ID1/3/4 in Main Mode" respectively. The battery in three of the tire pressure sensors has probably died.


    C2328

    The parking lock mechanism cannot be switched on a hill. This is a Low Voltage Error (Power Supply Malfunction). You need to establish why the parking lock mechanism is not getting the correct voltage.


    U0123/3/6


    The yaw rate (deceleration) sensor detects any gravity applied to the vehicle and transmits the signal to the skid control ECU via the CAN communication system (vehicle equipped with Enhanced VSC). The deceleration sensor is built into the yaw rate sensor and detects the vehicle condition in the 2 systems (GL1, GL2).

    When a malfunction occurs in the communication line with the yaw rate sensor, DTC U0123 (blink code 62) – "yaw rate sensor communication malfunction" and DTC U0124 (Blink code 95) – "deceleration sensor communication malfunction" are output.

    The skid control ECU inputs the steering sensor signal through the CAN communication system. When a malfunction occurs in the communication line with the steering sensor, DTC U0126 (blink code 63) – "malfunction in communication with steering angle sensor" is output.

    As with any "lost comms" type of error, it can be very involved in tracking down the cause.


    I'd suggest you check the 12V battery and make sure it fully charged. Then whenever diagnosing the car, make sure you have the charger in the battery.

    Next, now that you have a record of the codes that are there (you saved the scan file in Techstream, right?), I'd go ahead and clear the codes. Do a test drive and see what codes come back. Do a second health check scan.

    Let us know how you get on.
     
    #15 dolj, Jun 9, 2021
    Last edited: Jun 9, 2021
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  16. Quinton_Hall

    Quinton_Hall Junior Member

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    Thank you. Will try that. Did google codes last night. Looks like a lot of thinks have communication errors
     
  17. Quinton_Hall

    Quinton_Hall Junior Member

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    Thank you very much for your help.
    How do I clear codes in techstream?
     
  18. mr_guy_mann

    mr_guy_mann Active Member

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    Don't clear codes just yet. Click on the snowflake symbol to the left of some of the codes. That brings up the "freezeframe" data- info that the ecu saw when the code set. This can be very helpful when diagnosing the problem. Take screen shots and post them here.

    Posted via the PriusChat mobile app.
     
  19. dolj

    dolj Senior Member

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    This is good advice, but as long as the file of the health check is saved, the OP can reopen the file at any time and look at any of the codes plus FFD if they need to check or inquire on anything that they might want to review in the future.

    Before deleting any codes. Open the saved Techstream scan file and ensure all the information you might want to look up at a later date is there. If not, do another scan and save it again. You do this when you exit and return to the home screen.
     
  20. Quinton_Hall

    Quinton_Hall Junior Member

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    Thanks for all the replies. Can any one make sense of all this? I do have a new 12v battery fully charged and over 12v measured at under hood battery terminal. Would appreciate any help or suggestions. I'm pretty good with Volt/ohm meter, but I have no idea what to check.
    I'm having to drive my old beater/farm truck to work. 100 mile round trip daily commute on 1 ton dually 12mpg diesel with mud tires is tiresome and cuts into what I make working.
     

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