This is an intermittent CEL. I have 5V on plug, flexing wire does not effect voltage. Connector and pins look okay. Is this the solenoid or position sensor going bad; could it be o-rings? I do not detect vacuum leak. Engine runs fine, light only comes on at start-never running, but I don't push it above 4700 rpm often. How can I isolate issue since it's not a hard fault?
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