Cadillac Seville / Cadillac Eldorado Forum Discussion, Service Emission System 96 Eldorado in Past Cadillac Vehicle Discussion; I was returning home from a long trip (over 1,200 miles) and my SERVICE EMISSION SYSTEM light came on. My ...
I was returning home from a long trip (over 1,200 miles) and my SERVICE EMISSION SYSTEM light came on. My exhaust has been loud since I bought the car 2 months ago, but this is the first time any emission message has come on. Does this usually mean the catalytic converter is bad?
Automobile(s): 2002.5 F55 STS, 2014 Explorer XLT 4WD
MD Eastern Shore
Re: Service Emission System 96 Eldorado
Take a look at the sticky thread at the top of the main Seville page titled "How to pull codes". You want the link for OBD-I (OnBoard Diagnostics I) - it has an "obd1" in the URL. Learn to read your codes from the car's built-in system. You don't need a scanner. If the cat or O2 sensor system is bad there will be letter-number codes set which can be deciphered using the directions in the link.