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You have an 1996 Saturn sl1 and the service engine soon light keeps on turning past three codes that it has shown are p0303 p0341 p1406 egr already been changed when is on?

The P0303 code indicates a misfire in cylinder 3. This could be caused by a bad spark plug, spark plug wire, or ignition coil. The P0341 code indicates a problem with the camshaft position sensor. This sensor is used to determine the position of the camshaft and to control the fuel injection and ignition timing. The P1406 code indicates a problem with the exhaust gas recirculation (EGR) system. The EGR system is used to reduce emissions by recirculating exhaust gas back into the engine.

If the service engine soon light is on, it is important to have the vehicle diagnosed by a qualified technician to determine the cause of the problem. Driving with the service engine soon light on can damage the engine and other components of the vehicle.