My 09 VW CC check engine light is on

Asked by michaelzong Sep 18, 2014 at 01:01 PM about the 2009 Volkswagen CC 2.0T Luxury FWD

Question type: Maintenance & Repair

Hi, My check engine light was on April and I went to the VW dealer to check it. It said I
need to change the Thermostat and Throttle body repair, which would cost me over
1200. I think that 's too expansive. So I went to another shop and the guy told me
maybe the check engine sensor made a mistake. He just simply turned the light off.
Last month, the check engine light went on again, after several days it turned off
automatically. But this week, it went on again. I have driven my car for about 6 month
and over 2000 miles since the check engine light went on at first time. Everything works
well. Now I don;t know what to do. Do I need to check it again?  Could you please give
me some suggestions?

3 Answers

FordNut answered 10 years ago

My suggestion is have it scanned yet again. For one thing, no OBD scan can say thermostat..there are codes about coolant temperature but none, not even the best scanner can pin-point thermostat. Sure, the light can be turned off with a scanner, but that solves nothing. And the CEL light coming on a mistake? he is taking you for a fool my friend and if you don't know cars, we all have our areas of things, he flat insulted you. The fault remained, whatever it was so the light re- appeared. Go to AutoZone or someplace like that, get the codes, DON'T buy anything, come back here with the codes and tell us.

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FordNut answered 10 years ago

A faulty, loose or missing gas cap will cause the CEL to light up. A 2009 is really too soon to begin to have throttle body problems...but meantime don't just buy the cheapest gas. Buy Brand-name like Shell, Chevron. any of the big ones, the small independent refineries that sell to convenience stores and independent retailers don't have the detergents your car needs

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1,685

Rus answered 5 years ago

Check out this article on Common Causes that trigger VW check engine light. https://www.youcanic.com/guide/volkswagen-check-engine-light

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