2006 Prius error code C1343 read with Techstream

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Swamibob, Apr 9, 2018.

  1. Swamibob

    Swamibob Junior Member

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    I have a 2006 Prius with 47000 miles. Here is a picture of the data from the techstream program. The RR Wheel Cylinder is only reading .5 where all the rest are reading 1.1-1.2 I tried clearing the code but it comes back in a few mins. I also had a low voltage code in there but I did have the 12v battery go bad and changed it out recently and thought that was why all the break and abs vsc lights came on. I thought when I cleared the codes it would go back to normal since the lights seemed to come on when the battery was low and the car would not start without jumper cables being attached. The Hydraulic System code persists even with the new battery. Does this need to go to the dealer or is this something I can fix myself? Thanks,
    techstream code C1343.jpg
     
  2. SFO

    SFO Senior Member

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    Anything else you can share leading up to, during or after this code retrieval process?

    Recent brake job, hit a curb, funny noises, vibrating brakes, liquids underneath, etc
     
    Raytheeagle likes this.
  3. bisco

    bisco cookie crumbler

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    any drivability issues? dash lights?
     
  4. Swamibob

    Swamibob Junior Member

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    There was no brake job yet on the car at only 47000, and no fluids or hitting any curbs or anything other than about 6 months ago I did run over a curb on the right rear. I guess that may have cased something but it sure took a long time if it really did damage something. I really thought the low battery caused it and wiping the codes would fix it. The car is only being driven on the weekends for the most part right now and that is why the battery slowly degraded. The car wouldn't start one day, had to jump it off to get it to start, then I shortly after replaced it with the optima battery a lot of people recommend. Although there was a low battery code in there, wiping it took care of that and it didn't return but the other code reoccurs after about 5 mins just sitting in the yard with the car running.

    There are no drivability issues with it but if the right rear brake was not working it would be pretty hard to tell since most braking comes from the front brakes. All the lights that pertain to the brakes are on, abs brake vcs and the brake symbol.
     
    #4 Swamibob, Apr 9, 2018
    Last edited: Apr 10, 2018
  5. obiejon12

    obiejon12 New Member

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    I'm curious how the OP resolved this issue... I'm having the same exact problem!
     
  6. dolj

    dolj Senior Member

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    They probably went to a mechanic and had it fixed.

    When you say the exact same problem, what do you mean? You have a C1343 code? With what did you read that code? There are 5 sub (INF or detail) codes associated with that DTC. If you can retrieve the detail code it would narrow down the trouble area.

    Full work up for DTCs C1341/62, C1342/63, C1343/64 and C1344/65

    If you manage to fix it, let us know what you did.

    Hope that helps.
     
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  7. Mario SM

    Mario SM Junior Member

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    I just wanted to add to the convo since this forum has been an amazing resource for me. I had this Code come up in tech stream and at the time I had a couple of different issues going on so it was confusing. I fixed one issue at time. First off it was a bad Hybrid battery, then inverter had air in the system and was a little low.

    And then Code C1343 RR kept popping up. So I went to the brake cylinder and it was leaking. So I figured that must be it.... I did a brake job why I was at it and fixed cylinder at the same time. Got all the air out, but after a week or so it came back. I aired the system out again, adjusted my drum brakes and that got rid of it for a couple of days. then Back again.

    After reading a little more about the code it says it could also be the ABS actuator or vibration. Got me thinking cause my parking brake felt a little low after I adjusted it in the back every time. And I thought before I go putting a ABS actuator I would adjust the parking brake from the pedal under the steering wheel area. And presto! The issue is now gone after a reset of the DTC's

    I'm not saying this will solve everyones issue but it may help someone out there who like me was being silly and forgot to adjust their parking brake too. When I first started out as a mechanic I was always told to start with the basics first and work your way up to solve the problem!
     
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  8. ChapmanF

    ChapmanF Senior Member

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    That's an interesting tale. I'm at a loss to think up any causal connection between the parking brake pedal adjustment and hydraulic pressure regulation, though, so there are still questions in my mind. It's very rare for that pedal and cable to need any adjustment (the adjusting mechanisms inside the drums should be taking care of the normal wear), so it could be a red herring for other readers.
     
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