The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
That is the check engine light. Looks like a picture of an engine.
You hook up a scanner and check it for codes.
There isn't a single fuse for the check engine light. See related questions for explanations of why the light comes on and how to clear it.
There is a problem with the emissions system.
why do check engine light comes on
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected
That is the check engine light.
A flashing check engine light is an indication of an engine misfire.
ONE thing that will do this is disconnect the battery , then reconnect the battery but if the check engine light comes back on then take the veh to the garage for more diagnosing of the systems
A Dodge Ram will have a check engine light appear when the engine needs to be serviced. You can reset this light by following the directions in your manual or by having your mechanic do it.
You will need to get the cause of the check engine light repaired.
You reset the check engine light with a scan tool after repairing the failure.