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odometer failure causes check engine light? 200 1992

posted by  Ron DeBlock on  Mon Apr 1 06:43 CST 2002
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According to Bentley, a missing Vehicle Speed Signal will NOT cause the "check engine" light to illuminate. It will set code 3-1-1, however.

Since your speedometer is working, then the vehicle speed sensor is working, and your odometer has a mechanical problem (likely a broken gear).

I do not believe that the ECU "cannot function" without the vehicle speed signal. As far as I can tell, its only purpose is to tell the ECU when to set the upshift light in cars with a manual transmission (besides the speedo/odo, of course).





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New odometer failure causes check engine light? [200][1992]
posted by  someone claiming to be Geezer  on Mon Apr 1 06:19 CST 2002 >


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