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Check engine light keeps coming on in 98 VW Jetta O2 sensor reading replaced 02 sensor still coming on what to do?
Wiki User
∙ 11y ago
You need to have the ECU scanned with an OBD2 scanner and retrieve the code that has been set. The code will tell you what part of the emissions system is being effected. This will help you diagnose the problem. Or you can keep spending money throwing parts at the problem until you may or may not find the faulty part.
Wiki User
∙ 11y ago
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