1997 Dodge Ram 2500 Q&A

1997 Dodge Ram 2500 Question: WHAT CODE PO140 MEANS

ON DODGE RAM VAM 1997 2500 -
Answer 1
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. -