Worry! The error that CR800 Code Reader didn't check out

daviscandy

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Last Sunday, I traveled with my AUDI A4, suddenly its engine light was bright, I didn't know why, so I turned off my car and turned on many times, but it is still bright. SO worried, I check the manual, and it said that have monitoring problem on engine, but there have no fault code when I used my CR800 Code Reader to check. Does anyone have the experience to solve the same problem???
 

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