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MAN TGA 2007 Exhaust Gas Pressure Catalyst Sensor Error: EDC 03789-5, 1.3M km, Sensor Replacement

Begawan 18789 5
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  • #1 16329861
    Begawan
    Level 7  
    Hello, I have a problem with MAN TGA 2007, the car has already covered 1,300,000 km. The display shows the error EDC 03789-5 from what I know is related to the exhaust gas pressure in the catalyst sensor, the one on the pipe was replaced, the separator and the fuel filter also where I can look for the reason, I will add that the car does not smoke and had less power.
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  • #2 16330138
    darfur5
    Level 35  
    Differential pressure sensor or exhaust gas relative pressure sensor; short to ground. System response: Providing replacement value (with tond power drop). You replaced the sensor and nothing helped so check the wiring harness.
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  • #3 16330513
    Begawan
    Level 7  
    Tomorrow I will check the sensor beam and you know my friend how to check the sensor if it has any value? And what power should come to him.
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  • #4 16332075
    darfur5
    Level 35  
    There are three pins in the plug; 1 - no. cable 90126 - supply voltage 5V connected to the EDC controller plug A 41. 2- no. cable 90127 - sensor ground A 59. 3- cable number 90128 - output signal A 78.
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  • #5 16373852
    Begawan
    Level 7  
    Buddy darfur5 in the plug sensor has two pins I did not check the power I replaced the sensor with a new one I replaced the muffler with a new one but I adjusted the valves, errors removed and what the car left for 4 hours was all ok after the next firing the codes returned only without the yellow smoke indicator under the counter , we'll see if anything comes back or not. Do you have any idea where to look for the cause if there was still no power?

    Added after 19 [hours] 23 [minutes]:

    And as I thought power still lack someone will tell you what else I can check what could be the reason for EDC codes 03789-5 EDC 0081-02 and balloon ek orange under the counter. Please help.
  • #6 16374429
    Cobrat
    Level 22  
    Darfur5 wrote to check the power supply, i.e. the beam from the sensor - you neglected, you replaced the whole sensor. Are you looking for further ideas on what else can be exchanged? Someone will finally write you to change the car and be an insult to majesty. Btw. really be kind to check this sensor wiring! Because maybe you didn't need it, and Babol will go on ...
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