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Potential causes for the DPF light coming back on in a 2010 Seat Ibiza 1.6 TDI after cleaning are:
DPF re-clogging - If the DPF is not properly regenerating, it can re-clog and trigger the light.
Sensor malfunction - The sensors monitoring the DPF and exhaust system may be faulty, causing the light to come back on.
Software problem - A software issue could trigger the DPF light even if the DPF is functioning normally.
DPF damage - The DPF may have been damaged during the cleaning process, requiring replacement.
It's advisable to have a professional diagnose the issue using specialized diagnostic equipment. A qualified technician can determine the root cause of the recurring DPF light.
some relays are in or near the fuseblock.. some are behind the glovebox.. some are under the hood inside a control box..the dealer service can tell you for your make and model..
Dealer would simply reset using diagnostic and charge you for it
Here is manual reset
Switch ignition off
Press and hold trip button left off speedo
Switch ignition on
Service will appear in display
Release trip button
Turn trip button to right untill [-] appears
Release trip button
Switch ignition off
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