Can you get a code without check engine light on?

In short, yes; it’s possible to diagnose a problem with a vehicle even if the check engine light does not illuminate. A professional mechanic would start by downloading any error codes store in your 2005 Ford Explorer’s computer.

Can AutoZone read codes without check engine light?

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.

What if check engine light goes off?

A check engine light will shut itself off if the condition that caused it is remedied. … So when the light comes back on, take the car, and the tax refund, back to your mechanic and have him try an oxygen sensor.

Is it bad to have no check engine light?

Bad idea. The light is an indicator that there’s something wrong with your vehicle. … “The system is telling you that something has failed and will immediately cause damage to your vehicle that will be costly to repair.” Ignoring your check engine light could result in immediate car problems or deterioration over time.

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Can you bypass check engine light inspection?

By the way the easiest way to turn off the check engine light would be to disconnect the battery for 30 seconds. Inorder to pass inspection your car needs to complete a full drive cycle so that all (8) internal monitors have a status of “Ready”.

Why is my car shaking and check engine light on?

The check engine light will come on when any of the following issues are detected by your vehicle’s computer. Shaking or vibration may be caused by things such as faulty spark plugs, poor fuel pressure or misfires. … The other issue that may cause this type of shaking or vibration is a broken engine mount.

Can a misfire fix itself?

While you may be able to keep driving for a while if your car has a misfire, in the end, it’s really not a good idea. … Sometimes, a simple fix, such as replacing a spark plug, can solve the issue, so if your car is misfiring, don’t ignore the problem it it will only get worse (and more expensive).

Can an O2 sensor fix itself?

Oxygen sensors are fairly easy to diagnose and replace. Typically, you cannot repair a faulty O2 sensor. It must be replaced because of the technology and materials in its housing.

Will check engine light come on if transmission fluid is low?

Low Transmission Fluid



Your transmission fluid plays an important role in keeping the parts of the system lubricated. If the parts of the transmission are not properly lubricated, extreme friction can occur, which could result in damage. As a result, the check engine light can be triggered.

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Can needing an oil change make your engine light come on?

1. Your Car Needs an Oil Change. An illuminated check engine light is the first warning sign that your vehicle needs an oil change. It can activate because the oil is too dirty or when there’s not enough flowing throughout the engine.

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