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help new to the forum nd sentras. i picked up a 02 1.8L and i noticed it had the check engine light , it doesn’t affect performance but i do get a very high idle at cold start up, really sounds like someone giving gas up to 2-3k rpms...after a few mins it will settle down or if i add load like turning on the ac the idle calms down to normal....im sure this is the reason i have the SES light. but i am unable to scan for codes. every scanner i tried doesn’t power up. ive replaced the two 15 amps fuses under steering wheel and nothing .....
 
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