How to repair code P1170 - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 08-08-2009, 07:28 PM Thread Starter
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Question How to repair code P1170

I have a 1995 S320 with 178K on it. Currently it has code P1170 (short term fuel trim) after 20miles. I checked with MB mechanics, they said several things can be wrong: air leak, EGR, O2 sensor aging, air mass meter defective, incorrect fuel pressure, injector defective, temperature sensor defective, bad combusion... I don't think that many things can be bad at once! Have anyone run into the same code in the past? And what is the fix for this one? I appreciate someone share the experience.
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