Is is expensive to repair an oxygen sensor for a 2003 E320 Mercedes

Asked by Bubblingfish1 Jan 23, 2017 at 12:34 AM about the 2003 Mercedes-Benz E-Class E 320

Question type: Maintenance & Repair

Thursday as I was driving my 2003 E320 the yellow check engine light illuminated, however there were no other problems with the vehicle. The engine was smooth, the coolant level fine, the oil level was fine. Why is the check engine light on

1 Answer
223,915

Rowefast answered 7 years ago

First thing to do is have the computer read for any Diagnostic Trouble Codes, (DTC) This would point you in the right direction for repair.

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