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Reset Engine Control Unit (ECU) After DIY?

 
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vel_tins



Joined: 07/13/2006
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Post13-07-2006, 23:20    Subject: Reset Engine Control Unit (ECU) After DIY? Quote

Hello everyone,
I made changes to the adaptation of channel 1 (MSG) using VAG-Com.
I adjusted the "ori" value, sometimes increasing it and sometimes decreasing it... unfortunately, I didn't [note what I did].
I was concerned that my tuning box might icon_rolleyes.gif affect the value.
Now, even after resetting to the "default" setting (with the device connected), I am still not getting full performance.

Is it enough to just disconnect the device and then re-enter and save the values, or is there a way to reset the MSG (with the device disconnected) to the factory settings?
Okay, it's a 2002 Octavia with an ASV engine (81 kW TDI).

Best regards,


Translated on 21-09-2026, 22:22.
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Jochen_145
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Post15-07-2006, 22:23    Subject: Reset Engine Control Unit (ECU) After DIY? Quote

Hello.
A faulty sensor might only distort sensor readings; it doesn't interfere with the control unit's regulation process.
Therefore, any changes you make with VAG-Com are initially independent of the auxiliary module (since only target values are being modified).

If your car has no power after resetting it to the original values and then connecting it to the module, it's likely the problem is with the module itself, or you may not have actually saved the original values.

Best regards,


Translated on 21-09-2026, 22:24.
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vel_tins



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Post16-07-2006, 8:29    Subject: Reset Engine Control Unit (ECU) After DIY? Quote

Yes, I had entered the default value (32768) again... however, it may not have been saved. icon_question.gif

Okay, so I disconnected the device, entered the value 32768 into all the modified channels again, saved everything, and took it for a test drive. It's working again, then I reconnected the device and everything is okay.

I do have one more question: If I save the value "000" for adaptation channel "0", shouldn't all the other channels be reset to their factory settings?


Translated on 21-09-2026, 22:25.
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Rudi
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Post16-07-2006, 9:35    Subject: Reset Engine Control Unit (ECU) After DIY? Quote

Radio Eriwan... In principle, yes - all adaptation channels (that learn the control unit themselves).
Since your TDI doesn't have those adaptation channels, nothing will happen. icon_wink.gif

Best regards,
Rudi


Translated on 21-09-2026, 22:26.
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vel_tins



Joined: 07/13/2006
Posts: 3
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Post16-07-2006, 12:36    Subject: Reset Engine Control Unit (ECU) After DIY? Quote

Quote:
Radio Eriwan... In principle, yes - all adaptation channels (which the control unit learns itself).
Since your TDI doesn't have those adaptation channels, nothing will happen. X


Oh, so only the "self-taught" ones... I thought you meant "everyone."
learned something new again icon_razz.gif.
"Please provide the text you would like me to translate from German to English."


Translated on 21-09-2026, 22:27.
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