Question about 2000 Mercedes-Benz C-Class

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How to clear check engine light

Clear check engine light

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Engine lights normally have to be cleared by resetting the CPU. use a scanner for this purpose.

Posted on Apr 02, 2014

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Posted on Jan 02, 2017

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Cleared check engine light. How do I pass smog check?


Clearing the Check Engine light does not repair anything - it only turns off the light and clears the error codes. The problem(s) that caused the light to occur are still going to be present and the light will probably come back on, anytime from a few minutes to a few days depending on the problem(s). What you NEED to do is to extract the error codes that come with the light and take the corrective action(s) to repair the deficiencies. That will probably make the vehicle able to pass smog checks. Of course, now that you've cleared the Check Engine light, you've also erased the error codes, so you will need to wait for it to return to get the data you need for repairs.

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You need an OBD-II scantool to reset the Check Engine light. Places like Autozone will read your codes for you but most will not reset the Check Engine light because of liability issues. You need to either purchase a code reader with reset capability or find someone who has one to do it for you.

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Reset check engine light


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the check engine light comes on when a sensor is giving problem, when you clear the codes and the light came back did you check to see which code came back? Because right there would be the problem.

Feb 25, 2013 | 2001 Chevrolet Monte Carlo

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My check engine light came on. The dealership said "filler neck leaking causing evaporative leak." The gas cap also says "loose cap will turn on check engine light." Would like to try a new gas cap but...


sad to say sir that how to clear the code is not easy in manual clearing, you need diagnostic tool to clear the dtc, but some dtc will cleared by 20-50 consecutive warm up if no other trouble code detected by the computer

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How to Clear a Check Engine Light and Reset the Computer.


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How do you reset engine check light on 2004 Subaru Outback?


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