Why did my check engine light come on and then off?

But, there are other possible causes of intermittent illumination of the Check Engine Light such as failures in engine sensors, intermittent misfires, and faults with sticky or stuck valves such as in the EGR (exhaust gas recirculation) system or the EVAP system.

Why is my check engine light on in my Nissan Maxima?

Nissan Maxima Check Engine Light Flashing Other common reasons for a Check Engine Light are dirty mass airflow sensor, faulty head gasket, faulty emissions control part, a malfunction with the fuel injection system, damaged oxygen sensor, or defective spark plugs to name a few.

Can a check engine light come on by mistake?

The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car’s engine computer that something is wrong. If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly overheat the catalytic converter.

How long before check engine light comes back on?

It could come back on immediately or the next time whatever set the code to happen again. Generally when a check engine light has been reset it takes 60–70 miles for all the readiness counters to reset.

How do you turn off the check engine light on a Nissan Maxima?

How to Reset the ECU (Service Engine Soon Light) on a Nissan Maxima

1. Turn the ignition switch to the on position but do not start the car.
2. Count seven seconds, depress the gas pedal and hold it down for 10 seconds or until the service engine soon light begins flashing.

What does the check engine light indicate?

The check engine light is a signal that the onboard diagnostics system (or OBD II) has detected a malfunction in the vehicle’s emissions, ignition, fuel or exhaust systems.

Can an overdue oil change cause check engine light?

Oil changes are essential maintenance for your car but it won’t do anything that could trigger your check engine light to come on.

Why does my check engine light come on Late-Model Cars?

Finally, keep in mind that most late-model cars have more than one O2 sensor. A loose fuel cap is one of the most common reasons why the check engine light turns on. The cap is a crucial part of a car’s fuel delivery system. It notably prevents gasoline fumes from leaving the fuel tank, and it helps keep the whole system under the correct pressure.

What should I do if my check engine light does not flash?

If you see the Check Engine Light come on but it does not flash, there are a few areas to investigate before scheduling a service appointment. First, take a look and make sure your gas cap is properly tightened. Occasionally, a loose gas cap can trigger a fault in the emissions system which could cause the Malfunction Indicator Light to come on.

Can low oil cause the Check Engine light to come on?

The engine check light can turn on for a number of different reasons, but a low oil level is typically not one of them. Being low on oil is a serious problem, but it will not trigger your check engine light. It will, however, cause the oil light in your dashboard to turn on.

What causes check engine light to come on when gas cap loose?

Loose gas cap. A loose gas cap is one of the most common reasons why the check engine light turns on. The cap is a crucial part of a car’s fuel-delivery system. It notably prevents gasoline fumes from leaving the fuel tank, and it helps keep the whole system under the correct pressure.