Can A Bad Muffler Cause Check Engine Light?

Why is my car shaking and check engine light on?

If your check engine light is accompanied by your car shaking, there is cause for serious concern.

The shaking feeling can be caused by misfires, poor fuel pressure, faulty spark plugs, or a broken engine mount..

Will check engine light come on for bad ignition coil?

Faulty coils can lead to engine performance issues, particularly misfires, which will trip the computer and set off the Check Engine Light. The Check Engine Light will also be set off if the computer detects an issue with the ignition coil signal or circuit, such as when a coil burns out or shorts.

Can an overdue oil change cause check engine light?

One thing that won’t trigger a check engine light: a recent oil change that was done correctly. Oil changes are essential maintenance for your car but it won’t do anything that could trigger your check engine light to come on. If you notice the light after an oil change, something else is wrong.

What to do if check engine light is on?

What to Do About the Check Engine LightLook for a serious problem that requires immediate attention. Check your dashboard gauges and lights for indications of low oil pressure or overheating. … Try tightening your gas cap. … Reduce speed and load. … Use built-in diagnostic services, if available.

What problems cause check engine light?

Common causes of a check engine light Gas cap is loose: Tighten the gas cap. If you’ve lost it, replace it with a new one. Oxygen sensor is bad: You’ll need a new sensor — but identify which one is bad first. Spark plugs may be fouled or failing: Replace the spark plugs.

Can low oil cause a check engine light to go on?

Low oil pressure is a common cause of a check engine light turning on, and it can seriously interfere with your car’s performance. Usually, if this is the case, your oil light will also appear. … In any case, low enough oil pressure will disable your vehicle, so get this repaired immediately.

How long can I drive with my check engine light on?

When the check engine light is solid, you can typically drive the car for hundreds of miles without an issue. Of course, that depends on which code is stored in the vehicle’s computer. If an engine sensor is faulty, the car will usually use made up sensor values to keep running.

Can I 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.

Can AutoZone reset check engine light?

Originally Answered: Can AutoZone turn off the check engine light? Yes, Autozone can use a scanner to read and clear DTC’s.

Will check engine light go off after adding coolant?

Low coolant in the radiator of your car can trigger the malfunction illumination light (MIL), also known as the “check engine” light. Low coolant can affect the internal temperature of the engine, which is protected by the antifreeze.

Can a broken muffler cause check engine light?

An exhaust leak can trigger a Check Engine Light due to the fact that depending on the location of the leak, the leak itself is introducing more oxygen into the exhaust gases. … When too much oxygen is present due to the exhaust leak, this will cause Check Engine Light to come on.

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. With over 400,000 repairs nationwide, oxygen sensor replacements account for 8% of all check engine light repairs.

Can your engine light came on for no reason?

When your car’s check engine light illuminates your dashboard, it’s usually accompanied by a sinking feeling in the pit of your stomach. The light could be a minor issue, such as a faulty gas cap, or it could mean something more serious, such as a misfiring engine.