What can make your service engine soon light came on?

How do you fix a service engine soon light?

Loose fuel cap

This is by far the cheapest cause for the Service Engine Soon Light to come on. Simply turn off the engine, remove the fuel cap, and tighten it back up again. Maybe you just forgot to have it screwed around the whole way through the last time you filled up your car.

Why does my service engine soon light keep coming on?

The service engine soon light means just what it says – that you should have your engine serviced soon. … Since the sensors that turn on the service engine soon light are often triggered by a malfunction in the emission control system, the problem could be as simple as a missing or ill-fitting gas cap.

What is the most common reason for check engine light?

Replacing a faulty oxygen sensor — a sensor used to optimize a vehicle’s fuel-to-air mixture to increase gas mileage and reduce emissions — is the most common cause for a check engine light.

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Is service engine soon bad?

The check engine and service engine soon lights are an indication that something is wrong. … The problem may be an engine misfire that could damage the catalytic converters. In the case of a blinking check engine light, it is strongly recommended that you have your vehicle serviced immediately.

Can low coolant cause service engine soon light?

Low coolant in the radiator of your car can trigger the malfunction illumination light (MIL), also known as the “check engine” light. … Once the PCM detects the anomaly in the coolant system, the ECT fails to communicate the necessary voltage signal from the PCM, which turns on the “check engine” light.

Can bad spark plugs cause service engine soon light?

The answer is – yes! Worn spark plugs can cause your vehicle’s check engine light to illuminate, indicating an issue. It may even be a flashing check engine light. This is because bad spark plugs can cause your engine to misfire, which will trigger the check engine light to turn on.

Is the service engine soon the same as check engine?

The “Check Engine” light is a notification that something is wrong, the range can be anything from a loose gas cap to a faulty ignition coil. … The “Service Engine Soon” light indicates that your vehicle is due for its next service maintenance.

Can AutoZone check service engine soon?

Does AutoZone Scan Check Engine Lights? AutoZone does. If your light is on, and you are wondering why, head down to your local AutoZone where one of our store associates can help diagnose the issue through our free Fix Finder service.

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Does service engine soon mean oil change?

Its meaning can differ among vehicle models, but more often than not when it comes on, it’s not something you should overlook. As a general rule,if the service engine soon light is on, this means that your vehicle is due a routine service such as an oil change or a filter change.

Is it OK to drive with check engine light on?

The rule of thumb is that if the check engine light is flashing, you can’t keep driving the car. It’s an emergency. Often it indicates an engine misfire. If you keep driving, you will likely cause irreversible damage, mostly to the (expensive) catalytic converter.