Assume you mean the O2 sensor. In any case, you will have to reset the onboard computer to clear the code. If there is still a problem the code will re-appear after you run the engine again. The owners manual usually shows how to clear the code, if not go to your local library and look in some of the automotive reference manuals. I'm sure the error code did not say to replace the O2 sensor. The code gives a reference to what troubleshooting tree to use to help determine what the cause is. If it were the problem and you replaced it, it would have went through a self test and the light would have gone out on it's own, assuming there were no other problems that all of the monitors (self-tests) passed.
stop an engine
I will answer this question myself. First I changed out the o2 sensor because I needed one. (code) Next I changed out the MAP sensor. (code) End of problem.
I changed erg valve o2 sensor and gas cap but lights back on what do I do
check fuel pressure regulator
The check engine light will illuminate with a code(s) directing which O2 sensor is bad.
Need to know what code(s) were set and which O2 sensor you changed in order to help you.
The engine doesn't know when to fire the cylinders because it doesn't know where the cam shaft is. change the sensor.
More than likely it needs to be reset.
If you are asking about the 2.0L engine....the ECM was changed to what is called a NGC and the crank and tone wheel(pickup for crank position sensor) was changed. Also, the blocks are not interchangeable due to the position of the crank sensor was changed. It may be possible to change the crank and and sensor then extend the harness to reach the front of the engine where it was move from the rear starting in 2003 but this would be alot of work. Everything else on the engine should changeover fine.
Check to see if the wiring is damaged.
it has to be reset if you disconnect the battery for a few minutes should do it
The cam sensor is part of the distributor, the entire distributor needs changed. You can not get the cam sensor separately.