Troubleshooting

Common problems and how to resolve them. If a problem persists, you can send the file to MTX support — see Getting help.

The message “DTC structure not found” appears

This message means the software could not locate the work area it needs to disable the faults in that file. Send the file to support for further assistance.

The limp-home is not cleared after Disable

If Disable downgrades the fault but the car stays in limp-home, switch to Remove, which acts more firmly (the exact technique depends on the ECU type). See ECU-specific notes for what to expect per family.

The dashboard light stays on after Remove (Marelli)

On some Magneti Marelli ECUs the MIL can remain on after writing a file processed with Remove. Use the diagnostic tool to run “Reset self-learnt functions” so the ECU clears its stored data and starts a fresh round of checks. The full procedure (and the alternative when that function is unavailable) is in ECU-specific notes.

A fault code is not found

Diagnostic tools report codes in different standards, so a code may not be found if it is in the wrong field or the wrong format:

make sure an OBD code goes in the OBD field (with its group letter) and a manufacturer code goes in the PROD field;
check the make-specific formatting rules in the FAQ (VAG, BMW, etc.);
where available, use the Scan function to list the codes actually present in the file and see how the software has formatted them.

The file is rejected because of its size (partial reads)

If you use a tool that produces partial reads smaller than the standard file size, open the Settings window and tick “Skip file size check”, then load the file again.

The window is the wrong size on Windows 7/8/10

If the program window is not displayed correctly (text or controls cut off), look for the scaling text showing “100%” to the right of the DTC Remover logo. Click it to switch to 125%, then restart the application; the window will then display correctly. (Available in v1.6.4 and later.)

The USB dongle is not recognised

If the software does not detect the dongle, install its driver: download and unpack the current DTC Remover release, open the “Drivers” folder inside the “DTCRemover” folder, and install the dongle driver from there. See Installing the software for the full procedure. The dongle must stay connected while the software is running.