Check engine light will it flash one single time when you initially turn ignition key on

1998 MERCURY MOUNTAINEER
330,000 MILES • 5.0L • V8 • 2WD • AUTOMATIC
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DOUGLAS CHEEK
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When all codes are eliminated check engine light stays off while running will it flash one single time when you initially turn ignition key on.
Jul 20, 2019 at 4:21 AM
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BMDOUBLE
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Yes that is normal, if I understand you correctly. Get in, start the vehicle, cel light initially comes on then turns off, normal operation, it is a prove out for the warning lamp.
Jul 20, 2019 at 7:29 AM