Replacing the water pump will not cause the check engine light to come on. Either it is a coincidence or you have accidentally disconnected a wire or damaged a sensor somehow.
There are lots of different reasons a check engine light can come on does the car feel any different?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
The check gauges light comes on when one of the gauges is not in the safe range.
It means the vehicle will not pass an emission test.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Use an OBD scan tool to reset or disconnect the battery
yes, and what codes are you asking about "check engine" or anti lock radio codes?
The 'oxygen sensor'may need to be replaced on '96 Sentra when the check engine light comes on. The should be replaced on the '96 Sentra every 100k miles for better fuel efficiency and to protect the converter.
Need to know which engine and which transmission.
What did the check engine light codes say was bad?
96 means it's OBDII, so a flashing check engine light means it is misfiring bad and it is threatening to melt the cats.