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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
A check engine light comes on for a reason. The engine computer has detected something wrong somewhere in the engine management system and your car's computer needs to be scanned for fault codes to determine the source of the problem. If you have done all that then your cars check engine light needs to be reset, how this is done I am unsure. Get the engine serviced! The dealership can provide the service and cancel the alert.
2005 Kia Optima - stalling at stop signs - running rough - check engine light - what's wrong?
Check the gas cap. I know this sounds too simple to be true, but unless you tightented it right the last time you were at the pump this could be it. My 2002 optima just had these exact same symptoms. We thought there was water in the tank and when we went to add dry gas we saw the warning on the cap...make sure cap clicks three times or it is not sealed. If not, air gets in and causes these problems. Good luck!
How do you reset check engine light on 2004 Cadillac CTS?
You have to reset it with a OBC scanner :-)
What does error code P0740 for the check engine light mean?
PO740 is a Chrysler specific code that involves your Torque Converter Clutch Circuit
The problem could be in the TCC solenoid, or the torque converter itself.
Why does the Service engine light on 1998 Toyota land cruiser comes on and stay on?
Problem with emission system- have vehicle scanned to determine the problem
What does the check engine light mean if it comes on in a 1990 Acura Integra?
The indicator lamp means that the engine needs to be checked. Something is amiss that the onboard computers caught and quick attention is needed before the situation worsens. Could be the air filter is clogged and needs to be replaced ... could be a whole array of problems much too lengthy to post here - Some problems are obvious depending on how the car is running.
How do you pass an inspection with check engine light on in a 97 dodge neon?
you don't. find out what the code means, and get it fixed. You cannot simply: unplug the light, it has to light for the preliminary inspection, and the code will still be there and will be found when they hook your car up to a scan tool; reset the car, the sensors have to reset the monitors before you take it in which will kick you out for the monitors not being ready.
Why does the check engine light go on for a 2003 Kia Sorento?
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.
How do you reset the check engine light on a 2003 Isuzu Axiom without a odbII CODE READER?
Perhaps disconnecting batt for 30 mins-but it will just come back on.
What is check engine light code 1255 on a 94 Dodge Dakota?
1255 is actually 2 separate codes. code 12, and code 55. code 12 just means the battery or power source to the computer has been disconnected in the last 50 key-on cycles. 55 means it is the end of the code sequence.
Cooling Fan output circuit fault
On some vehicles it may double for glow plug out put circuit fault
Check fan relay in in place
Check that fan runs correct, some vehicles the computer can tell if the fan does not start and run correct.
Does the gas cap not being on tight makes the gas light come on?
No, a loose gas cap can cause the check engine light to come on but not the low fuel light.
How many miles do you need to drive to pass emission test after resetting check engine light?
50 miles
Would a bad thermostat cause check engine light to come on?
It could.
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.
It could.
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.
How do you reset engine light for 2000 Daewoo Lanos?
You need to hook an OBD II code scanner up to the car to clear the light. Auto parts places will check your car for free and tell you what made the light come on in the first place. If you don't fix the problem, the light will more than likely come back on.
What is the Subaru boxer engine layout?
Instead of the pistons being arranged in a V pattern [ \ / ] or inline [ | | ] they are flat along a plane, moving along the same axis but in opposite directions [ - - ].
The diagrams offered by clicking the link below are MUCH clearer.
Where is the 05 cylinder on a Ford Expedition 5.4 liter v8?
On a Ford Expedition , 5.4
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front of vehicle
1) no
2) it's OBDII. Most parts stres will read the codes to you (and clear them) for free. You can also buy a reader for very little.
About half the Check Engine light problems on these tortioses are caused by a loose gas cap, a bad ignition coil, or a bad DPFE sensor. If you're a DIYer, keep that in mind after you get the codes read.
If you have access to a scan tool (not a code reader) you can use the DPFE PID in the data stream and a vacuum pump to test the EGR system, and you can use mode 6 test ID 0x51 or 0x53 to identify any weak coil.
Most EVAP faults not related to a loose cap are caused by a bad o-ring near the canister easily identified using a smoke machine when the car is nice and cold.
If you get a cam sensor code, consider if you've been hearing a squeak noise like a belt chirp that doesn't go away when you replace the belt. If so, use a prybar or similar tool to press down on the synchro. If the noise goes away replace both the sensor and the synchro.
What would cause a 2001 VW Passat Check Engine Light to come on and the car jolt while accelerating?
I have driven a 2004 passat wagon that apon acceleration the car jolted and vibrated. Turns out the problem was the engine had a rod knocking and pretty much a bad engine, this could have been caused by a water pump or a oil pump not working. I would have a mechanic check it out right away.
Can an catalytic converter be unplugged?
yes but it is illegal only way to unplug is to gut a hole in it and scrape out the guts. this means the catalictic converter will no longer do the job it is supposed to.
What causes the check engine light to come on a Chevy trailblazer 2003?
Oxygen sensor, Transmission overheating, Idle Air Contole Vale, Mass Air Flow Sensor, Emissions related equipment...ETC There are dozens of reasons, you need to have a scanner plugged into your OBD2 port and scanned for codes. From those codes you will find out what you need to do to correct the problem. These codes may or may not end up costing you hundreds to fix. But it is extremely important to get this checked before driveability problems arise.
If it is solid, there is a problem with your fuel economy system. For example your gass cap may be loose. Another cause could be if you changed your tires to a different size that is not recommended for the make and model.
If it is blinking then you have a problem with your ignition system. For example you may have a misfiring spark plug.
If you read your owners manual all the warning lights are explained in detail. If you do not have your owners manual then I recomend that you buy one and keep it in your glove box. It will also tell you how to reset your change oil light after you do and oil change, so it will track it properly for you.
What do the dashboard warning lights on a 2003 Mazda Tribute look like and mean?
It depends on which lights are being described. Some of them will be for gas, others for oil change, and then some for other issues.
Why would the check engine light come on a Trail blazer?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
What does the snowflake light on a Vauxhall zafira do?
This button allows you to creep forward without putting your foot on the accelerator. (This is on our automatic zafira, i don't know about manual zafiras)
