Question about 2006 Mitsubishi Eclipse

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I have a 2006 eclipse with these codes p1779, p1780, p1781, p1782. The transmission fail in all gear. I want to know if is the planetarium or an electrical component?.

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  • Mitsubishi Master
  • 16,404 Answers

This is an electrical control problem. The gear selector switch is bad.

Posted on Apr 18, 2015

  • 4 more comments 
  • Dawid Szywalski
    Dawid Szywalski Nov 18, 2017

    I have the same code error after replacing automatic transmission and clutch. Are You sure this is only electrical problem? My mechanic suggested preassure problem and I don't know wich part replacement is necessary

  • Brad Brown Nov 19, 2017

    That error is the TCM not getting the proper signal and that could be a bad connection, ire harness or a bad TCM

  • Dawid Szywalski
    Dawid Szywalski Nov 23, 2017

    thanks for response. Mechanic just realised that he mounted mitsu eclipse 3g gearbox F4A42 instead of 4g version F4A4B. Gearbox works ok for some time and thenm it enters in safe mode. Should I buy 3G ECU? do You have any idea? I am from Europe and it is not popular car here so I am looking for any help

  • Brad Brown Nov 23, 2017

    Don't switch ECU that would be more problems.

  • Dawid Szywalski
    Dawid Szywalski Nov 24, 2017

    Ok so what do You sugest? Check harness connection again and if it is ok ten Look for new TCM?

  • Brad Brown Nov 24, 2017

    That is the way to go. Replace the TCM with the recommended one.

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P1779 p1780 p1795 p0700 p2176


Trouble Code: P0700

Malfunction Indicator Lamp Circuit Malfunction (TCM)

Possible Causes:


MIL control circuit is shorted to ground.Check the TCM for any trouble codes in memory that are responsible for the request to turn on the MIL.TCM has failed.Trouble Code: P1780

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Whats a reverse ratio and a P1784 & P1782


Hi.

Technically speaking a gear ratio is the rapport between the angular velocity (rotating speed) of the engine shaft and the angular velocity of the transmission output shaft.
The reverse ration is the ratio of the reverse gear. Your codes are pointing at a problem with the electronic transmission, probably a defective pressure switch inside transmission resulting in wrong reverse gear ratio. Please see my troubleshooting in this similar case where a defective pressure switch led to incorrect first gear ratio (I know your code is with reverse).

Regards.

Ginko

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P1646 how much to repair


P1512 Throttle Position Sensor Idle Switch Sense Circuit

P1513 Throttle Position Sensor Idle Switch Sense Circuit

P1514 Park/Neutral Position Switch High Load Neutral/Drive

P1516 Gear Change Park/Neutral Malfunction

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P1780 Automatic Transmission

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P1782 Automatic Transmission

P1783 Automatic Transmission

P1785 Automatic Transmission

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P1791 Automatic Transmission

P1792 Automatic Transmission

P1794 Automatic Transmission
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