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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

What is usually wrong when the check engine light comes on?

Testing devices used to check the condition of engine modules are usually

Engine light blinking and car will shutter?

You are not putting the right gas in your vehicel. I bet you need 91.....

What should you check when the check engine light comes on?

The "Check Engine" light, or "Malfunction Indicator Lamp" in modern cars is activated when a fault is detected in the fuel delivery, combustion, or exhaust emission system of your car. Sometimes, the cause of the fault will 'go away', and the light will go out on its own. There is very little that is 'owner-diagnosable' about an MIL light, without the correct scanning and diagnostic tools at a qualified mechanic shop. Every car is different, but usually things like low oil pressure or a busted headlamp will not set off the "check engine" light.

How do you reset the check engine light on a 2004 vw beetle?

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.

And then in two weeks it will come on again and it will be something else. Save your money trade it in or go broke chasing your tail.VW Beetle's are to expensive to own.

Turn off check engine light 204 Chevy Colorado?

First try and disconnect the battery (positive side) for about 10 minutes. If this does not work take it to a local auto parts dealer and usually they won't charge you to reset the computer. They can also tell you what codes come up. Dealer will charge usually a minimum charge of 1/2 hr shop rate.

How do you reset the service engine soon light?

Auto Parts StoreTake vehicle to auto parts store. Most will do a free test with an OBD reader. The reader will tell you why CE light is on. Could be as simple as a loose gascap. Try that route. Some readers are able to reset computer and turn off CE light, but will only be temp if original problem is not addressed.

Service engine soon reminders do not have codes

It would have been kind of you to answer the question. You didn't, or can't and you wasted time I will never get back.

On most cars the service engine soon light is the check engine light.

Service required has to do with oil changes.

The oil change light is reset differently on each make/model.

What is a P0441 trouble code for a 2004 Dodge Stratus?

Trouble code P0441 means:Evaporative emission control system incorrect purge flow

What does Trouble Code P0137 mean?

Trouble code P0137 means:O2 sensor circuit low voltage (Bank 1 Sensor 2)

What does the abs light on the dashboard mean on a fiat punto?

in my fiat punto (51 plate) i had the abs light on constantly. This could simply be down to having a dirt covered ABS sensor or the ABS sensor just being damaged. I paid about £30 for an aftermarket ABS sensor. its a simple fix and shouldn't be too costly.

What does it mean when the check engine light and red dot light are flashing and the car wont start in your 03 dodge neon?

The red dot is an indicator for a failure in the theft/sentry key system. The sentry key system is for the key with "chips" in them.

The red dot is an indicator for a failure in the theft/sentry key system. The sentry key system is for the key with "chips" in them.

Check engine light on 95 Jeep Cherokee Sport?

There are several reasons why a check engine light could be on a 1995 Jeep Cherokee Sport. A few reasons are a loose gas cap, spark plugs, or low oil.

RX330 VSC Trac Light and Check Engine Lights Come On?

I had a similar problem with my RX300 2002. I just replaced the bank 1 sensor 1 and bank2 sensor. These are Air Fuel ratio sensors which are found before the catalytics converters. Hope it will solve your problem

Why do motorcyclists rev their engines at stop lights?

For the same reason why muscle cars and sport cars rev their engines.

98 Volkswagen jetta Wolfsburg edition When hitting a puddle the car stalls and shakes check engine light comes on you recently changed head gasket did a tune up changed all wires it still shakes?

Possible causes in order of likelyhood: water entering distributor or individual plug wires (through cracks) Have you changed your oil? Has there been any sign of water in it? (Water usually appears as a whitish sludge or drops). If so: Water getting into engine through: airbox air inlet manifold inlets between head and block (if improperly machined or installed) I had this same problem. Check the coil for cracks, there could be a crack near the spark plug connector and its making a spark jump outside the coil into the cable. Of course water will make it easier for the spark to jump out. I had to buy a new coil for about $50. Good luck! it could also be your distributor cap/ignition wires/rotor. if there is a bad seal on any of them, it will leak water, and shut the motor down. its happened to me a few times.

Nissan 01 Frontier SE w service engine soon light comes on. I check the engine it sound likes the air is leaking somewhere around the engine Please help w answer Thanks?

Check the Vacuum system for loose hosesSounds to me like a vacuum leak. Follow all the lines of the vac system to try and pinpoint the leak. If no leak found there youll wanna check for a good seal around the intake. Be sure the boot is intact and all bolts/screws are tight. To get a better feel for what your looking for go to autozone get a free diagnostic. If it tells you a sensor that has to do with the intake, you should check there. If it says EGR or any other sensor that has to do with the vac. system check there.

LISTEN CLOSELY FOR NOISE VERY POSSIBLY A LOOSE HOSE

Vacuum Leak

I agree, it is most likely a vacuum leak. You can use carb or throttle body cleaner to help find these leaks but DO NOT UNDER ANY CIRCUMSTANCES USE THIS TECHNIQUE ON A HOT ENGINE! If you do this while the engine is hot you could set your engine on fire. Take the carb cleaner and spray a little around the vacuum hoses and listen for an idle change. If the idle changes you have found the leak.

1998 Subaru Outback with check engine light on Auto Zone said it was the knock sensor Checked the ohm resistance It read 540 ohm resistance Any advice It came on again?

The first tlme the chk eng. lite came on in my "98" Outback I panicked. In Calif at the time & garage wanted $110.00/ hr. but friend said not to worry. It happened rt aftr I tnkd up in Oregon. Lt cleared after considerable driving but happened again eventually.The cause was from the attendant not tightening the gas cap tight enough. Book states to give it AT LEAST 3 clicks. I've had no more trouble since adhering to this simple rule. Hope it works for you!

Why is your Nissan largo check engine light flashing?

The check engine light is flashing due to a problem with the emission system. I flashing check engine light usually indicates a random engine misfire.

What do you look for when the check engine light comes on in a 1999 Breeze?

You look for the little plug where you connect the OBD2 code scanner, then you read the computer code to find out what's wrong.

The "check engine" light indicates that the computer has a "code" to tell you, meaning that the computer has detected a fault.

The computer is trying to do the work for you, you just need to read the code.

Has anyone had problems with a 1999 Mazda miata engine light staying on?

http://forum.miata.net/vb/showthread.php?t=380017

This explains it all.

I did this and had my codes reset after doing lots of other things this gets the job done right! Vacuum hose rerouting evidently the factory sent out the 1999's wrong and you don't see the problem until later on BUT THIS FIX WITH PICTURES AND DIAGRAMS IS VERY GOOD..... then have your codes reset.

I have had mine done and Ive been good for over two years!