You need to have the OBD II trouble codes read. Some Parts stores will do this for free. They will give you a Letter and number series (usually a P (sometimes B, C, or U)). Example: they may pull a P0300, P0173, and P1173. Each code will give you a general idea of what system is malfunctioning. There is no "quick fix" . A diagnostic scanner cannot tell you exactly what the problem is.
It means that the engine computer has detected a malfunction and set a code.
The 2004 Nissan Sentra has an inline 4 engine.
Trouble code P1446 means: EVAP Canister Vent Valve Malfunction (Closed)
The 2004 Nissan Sentra has a 1.8 L base engine size.
The 2004 Nissan Sentra's engine produces 126 hp @ 6000 rpm.
The 2004 Nissan Sentra's engine produces 129 ft-lbs. @ 2400 rpm.
How to reset service light on a 2004 grand am
2004 Nissan sentra with a 1.8L engine has a timing chain and you do not replace it.
i have replaced the plugs and wires and my service engine light comes again in 2004 land rover discovery
H11
To reset the service engine soon light on a 2004 GMC Envoy you can remove the ECU fuse. ECU stands for electronic control unit.
I brought my 2004 to a shop for this reason, apparently its a small electronic chip that the dealership turns off. It should not cause you a problem other than seeing it on all the time.