Seat Toledo 2003

Hello everyone ... I just bought a Toledo Seat 2003 1.8 20v ... Someone can tell me about this car, do you have 125,000 kls but in VDD it is in very good condition ... only that I could not have turned off the check signal of the Checvk Engine that is yellow ... the seller told me that it is because I removed the catalyst ... my question is that I have not been able to verify this since they could not see this. Computerized diagnosis ... Because this is someone, the same thing happened
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