Service engine soon w hat could it mean - 1999 Dodge Caravan

It means time for a service.
Take it to your Nissan dealership for service.

Service engine soon ? Do you mean SERVICE VEHICLE SOON Indicator
The amber SERVICE VEHICLE SOON indicator is an alert to the driver whenever there are specific current codes stored in the BCM or in the event of a loss of Class 2 serial data.

If your vehicle has a check engine light ,it doesn't have service engine soon .One or the other .

Service Engine Soon

If the Service Engine Soon indicator light stays lit after you've started the engine, the On Board Diagnostics system (OBD) has detected a malfunction of the vehicle emissions control system. Contact your authorized dealer as soon as possible.
If indicator light is blinking, an engine misfire may be occurring, which could damage your catalytic converter. Drive in a moderate fashion (avoid heavy acceleration and deceleration), and have your vehicle serviced immediately.*
The Service Engine Soon indicator light illuminates when the ignition is first turned on (prior to engine start) in order to test the bulb, as well as indicate whether the vehicle is ready for Inspection/Maintenance (I/M) testing.
Normally, the Service Engine Soon light will stay on until the engine is cranked, then turn itself off if no malfunctions are present. However, if after 15 seconds this light blinks eight times, it means that the vehicle is not ready for I/M testing.Check this link out Gary.
https://owner.ford.com/how-tos/vehicle-features/dashboard-instrument-cluster/warning-lamps-and-indicators.html

Not related. The service engine soon lite is operated by the speedometer, so it's just coincidence that it came on soon after the water pump repair.

hi Stephen
Service engine soon means you have a fault in the engine management system.
you have to take your car to the garage for diagnostic
good luck

should have two lights check engine and service engine soon.check engine means there is a malfunction.service soon is reprogrammable,when you change you oil. check you owners manual for reset.

I’m happy to help further over the phone at https://www.6ya.com/expert/kenneth_3efc1f8510674f04

are you sure thats a main-lamp, not a ser-eng-soon meaning check engine as something is wrong, some car makers use service engine soon or check engine to let you know you have a problem.

The service light means something is wrong with the car and it needs attention now. Get the codes checked and that will tell you what is wrong with it.

This means it's time for a service..But have it diagnosed with a computer and maybe sometimes resetting it solves this problem.If the light comes back again then you need a servicing of the engine.

Yes, it means it needs its routine periodic service. Not performing maintenance will inevitably lead to more expense.