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Check Engine Light

The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.

7,238 Questions

Can your check engine light come on because of bad spark plugs?

A spark plug that is causing a misfire is one of many reasons for the check engine light to come on.

Why does your engine light stay on for a minute or so on your 2003 heritage softail?

The started putting computers in the bikes a while back. The engine light stays on for a few seconds after turning the ignition switch on to allow the fuel pump to pressureize and the computer to boot up and callibrate. You should NOT start the bike before the light goes out!

How do you reset the check engin light on 2005 dodge ram 1500 4.7 liter?

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

Is it safe to drive jaguar x type with the engine warning light illuminated?

It depends on why the light is illuminated. The only way to find out is with a scan tool.

1998 Honda Accord check engine light?

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

What does a 120cc engine mean?

The displacement of the pistons in the engines measured in cubic centimeters.

Why would a 2000 Dodge Stratus speedometer stop working and check engine light stays on?

You need to have the system checked for trouble codes. You will most likely have a speed sensor code. If an auto it will be the output sensor on the front driver side of the trans. If a manual it will be the sensor on the right axle shaft housing.

Ford f 250 1989 - check engine light?

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

Does the check engine light come on for scheduled maintenance?

No, it comes on when there is a failure that can affect the emissions of the vehicle.

See related question below.

What are the check engine light codes for a 1998 Chevy?

There are dozens of codes. Be specific as to what code you are getting.

What do I do bout a number 2 cylinder misfire?

What do I do bout a 2 cylinder miss fire on a 2008 Mitsubishi Eclipse

How do you reset check engine light on 96 ford ranger?

Should be able to reset it by disconnecting the negative battery cable from the battery for ten minutes.

What is the srs engine light on mean for a 2000 Honda civic?

The SRS (supplemental restraint system) is your airbag system. The the should light up when you start your car and go away after a few seconds. If it stays on, there is a problem with the system. You should probably take it to a certified Honda mechanic or a Honda dealership

Why did my Reduced engine power light turned on?

When my Reduced Engine Power Light came on in my 2004 Envoy it ended up being the entire pedal assembly and the electronics that control it. If I remember correctly it ended up setting me back around $500.00. Hope this helps!!

Why would a Hyundai check engine light come on?

It means the car's computer has detected a malfunction. Could be serious, could be simple. You should bring it somewhere to have the codes read. Sometimes you can have it done for free at a local car parts store. If the check engine light is on, your car probably will fail emissions, in case you need to get that done soon.

How do you Reset check engine light 1996 Toyota t100?

Simple. Remove battery cables and wait 15 minutes. If light comes back on check code and repair.

Low oil but your oil pressure gauge indicates normal pressure?

Oil level and oil pressure are different. You don't need to have full oil to get normal pressure.

What is wrong when service engine soon light stays on on 96-S10?

There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.

Your check engine light came on for your 2003 Lincoln Aviator what could cause this to happen?

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

What does the check engine light mean on a 2004 Chevy Tahoe Z71?

A check engine light means that the computer has detected a malfunction. You need to have the codes checked with a scan tool. The cause could be electrical, mechanical, etc.. Engine is malfunctioning on multiple cylinders. Changed plugs, Wires and coil packs. had driver side rail fuel injectors cleaned, any other suggestions?

Where is the vapor canister on a Honda?

On the passenger side firewall....its a small black cylinder with three spots for hoses on top and one on the bottom

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