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[Solved] AUDI Q7 3.0 TDI - P0700 Gearbox Control Module Error & Intermittent Firing Issues

artsan1974 20703 15
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  • #1 17241399
    artsan1974
    Level 10  
    Hello everyone, I am asking for help with my AUDI q7 3.0 tdi engine bug, the problem is, a month ago in the morning I took my daughter to school and parked for 5 minutes, after returning, the spiral flashes suddenly and it did not fall off, the tow truck and to my brother's workshop after Connecting the computer, the error code p 0700 gearbox control module popped up, all day of checking and nothing like the spiral flashing all day long, it is strange that in the morning I come up and here the spiral goes out and the engine started, I took the car and drove it for 2 to 3 weeks without any problems , the day before yesterday the spiral flashed suddenly and it does not start again, but I closed twice and created the ignition switch and the spiral went out and it fired, I will add that there are no errors in the box, I checked all the contacts under the shaft, I changed the sensors on the ramp and on the pump, please help me, I miss already ideas. I repeat the topic, if anyone has any ideas about my problem I will be grateful.
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  • #2 17242056
    Anonymous
    Anonymous  
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  • #3 17242351
    artsan1974
    Level 10  
    The starter is spinning like crazy, there are no errors in the gearbox, the only error is in the p 0700 engine (mechanical damage to the gearbox controller), but there is something that the spiral is flashing, the fuel pump in the tank does not supply at this point, I will be honest with you that I bought the car with a damaged engine, before I bought the second engine, it was open all winter in the open air, then I bought a complete engine and as I mentioned after my brother had installed the engine for about a month and a half, I drove without any problems, hence the replacement of sensors from the worn engine,
    My suspicions are there not a motor driver because this is what the mechanic who works for my brother suggests. I will say that I drive with AUDI on a daily basis, only with my heart on my arm, the spiral flashes, I close the ignition switch and it goes out and I start only, I am afraid that it will be left on the road again.
  • #4 17242482
    Anonymous
    Anonymous  
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  • #5 17242499
    artsan1974
    Level 10  
    As I mentioned, the sensor on the rail is replaced, high pressure also and the shaft position sensor is New original with the rest of the engine speed shows the computer, I only did not check the camshaft position sensor, I even did so with the computer, I delete the error p 0700 and I start to disconnect the ankles from the sensors teeth he threw an error p 0700 but none of this error pops up, I even unfastened the cube from the box controller under the passenger seat and fired to be sure if the gearbox has something in common, it is strange that when it starts I can drive all day and nothing happens, it does not tug evenly it comes with strength, only when I turn it off, I wonder if the spiral will flash or not.
  • #6 17242657
    bodzio012
    Level 33  
    When not smoking, can you connect to the engine without any problems? If so, no ECU.
  • #7 17242694
    Strumien swiadomosci swia
    Level 43  
    If your car does not go out while driving, don't mess with the engine accessories.
    From what you write, there is no power after turning on the ignition.

    If this happens to you, do not turn off the key, just call an electrician with a computer, let him connect and diagnose, and you will see what the commune is with and where the errors are.
  • #8 17242821
    Anonymous
    Anonymous  
  • #9 17243905
    artsan1974
    Level 10  
    Hello, as I mentioned, my brother has a workshop, so I have constant access to a computer, the error comes out in the engine only p 0700, the situation is strange, but what you say, the pressure on the ramp will be checked and let you know, it's worse that it can be cool a few days and a few days on one day the spiral flashes times.
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  • #10 17243932
    Strumien swiadomosci swia
    Level 43  
    When there is a fault, check the gearbox mode and position.
    I suppose she doesn't know what condition she is in and she won't let it start.
  • #11 17243950
    artsan1974
    Level 10  
    As if on the board I have P ... and no problem with the connection to the engine. There are no fault codes in the gearbox.
  • #12 17243954
    Strumien swiadomosci swia
    Level 43  
    It's not about errors, just the state of the box at the time of not firing.
  • #13 17243971
    artsan1974
    Level 10  
    I did not check this, but when the spiral is flashing and it did not come off, I tried to move the lever to the rnd etc. And return to the p. And nothing at all.
  • #14 17244075
    Anonymous
    Anonymous  
  • #15 17244094
    artsan1974
    Level 10  
    A friend can explain in a simple way how should I check the position of the box? And if you have enough, thank you for the advice so far, there is no fault program ...
  • #16 17325849
    artsan1974
    Level 10  
    Hello, I am happy to inform you that my problem with firing Q7 has been solved, the computer was at fault, water got into it.

Topic summary

The discussion revolves around an AUDI Q7 3.0 TDI experiencing a P0700 gearbox control module error and intermittent starting issues. The user reports that the glow plug indicator flashes, and the vehicle fails to start intermittently, despite the starter functioning properly. Various components, including sensors and the engine control unit, have been checked or replaced, but the problem persists. Suggestions include examining the communication between the gearbox controller and other sensors, checking the fuel pressure, and ensuring the gearbox position is correctly recognized. Ultimately, the issue was resolved by identifying water damage to the computer, which was causing the faults.
Summary generated by the language model.
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