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1997 Dodge Ram 2500

 

Question: WHAT CODE PO140 MEANS

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mansiel, Indio, CA, December 02, 2012, 12:16
 Rookie

ON DODGE RAM VAM 1997 2500

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  • Answer #1

    pushrod December 02, 2012, 13:55
     Master

    It means the ecm has detected a problem with the rear o2 sensor or circuit. USUALLY replacment will fix this but not always.
    Circuit can be checked with a DVOM. Or just take a shot at it with a new sensor.

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