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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 Georgia law on purchasing a used vehicle with a check engine light on?
See www . CleanAirForce . com
The new 2012 Q&A pamphlet shows emission testing is required in 13 counties in Atlanta metro area for all cars and light duty trucks manufactured 1988 thru 2009. State law prohibits selling a car or light duty truck to anyone in these counties until it has passed a current year emission test. The vehicle for sale must have passed the test, it cannot be "emission test ready". If the current emission test certificate has been lost, go to www . CleanAirForce . com, input the VIN# and print the certificate.
What do DifprePe means on check?
"DifprePe" on a check typically refers to "Different Presentment," which indicates that the check is being presented for payment in a manner that differs from its original terms or presentation. This could involve changes in the way the check is processed or the institution handling it. It is important to check with your bank for specific details, as interpretations may vary.
What is causing engine codes P0422 and P0303 to go off on your 2000 vw jetta?
Trouble code P0422 means: Main Catalyst (Bank 1) Efficiency Below Threshold
What does a engine symbol mean on a vehicle?
ANSWER: It is the check engine light. It starts out a yellow meaning that there is some thing going on and have it looked at soon. If by chance the little engine light is red, this means do not drive your vehicle until you have it serviced. There are many things that could cause this to happen from fueling the vehicle with it running , a sensor not functining properly, or a major engine problem. It is not to be taken litely if it is red, you could severly damage the engine if you ignore it.
Why is your husband's 2001 Ford Explorer Sport's check engine light blinking?
If the check engine light is blinking that means an engine cylinder misfire has
been detected ( you will need to have the vehicle scanned for any trouble
codes to help diagnose and then repair the problem ) You can drive the
vehicle in for repair , just avoid any rapid acceleration or deceleration because
you can damage the catalytic converter
Would a bad manifold gasket cause gross vacuum leak at the intake?
Yes. If an intake manifold gasket was not installed properly or has somehow become damaged the engine will pull air through the opening.
Just found it myself. Short the top two on the right side. Have the ignition turned to "on" and then do it. You get X number of blinks, a pause, then more blinks.
Mine was 1 -pause- 2. 12 for me!
What tool is used to check horizontal trueness?
You Use A Lever
CORRECTION:
You use a LeveL, not a LeveR.
LEVEL!
Why is Orange s sign flashing light mean?
An orange flashing light on a vehicle typically indicates a warning or caution signal. It's often used to alert other drivers of a potential hazard, such as a slow-moving vehicle, construction zone, or emergency situation. In some contexts, it may also signify that a vehicle is about to make a turn or change lanes. Always exercise caution and be aware of the surrounding environment when you see a flashing orange light.
too lean at higher load
- Leaking fuel injector or pressure regulator
- High fuel pressure condition
- Faulty front HO2S
- Leak in exhaust system
- MAF sensor faulty
What could be wrong when the suspension light comes on and the fuse blow on a 1992 Lincoln Town Car?
A possible cause for this is that air suspension pump is continully working due to a leaking air bag
What does it mean when the emission light comes on in a 2000 Ford Focus?
It means that the computer has detected a fault and has stored a problem code. You can use a code scanner to find out what's wrong. It's probably something like an oxygen sensor, EGR valve, MAP sensor or something else that affects the emissions, but you won't know for certain until you check for the code.
Trouble code P0455 means:EVAP Large Leak Detected
Large vapor leak in the evaporative emmisions system
Trouble code P0455 means: Evaporative Emission System Leak Detected (gross leak/no flow)
Large vapor leak in the evaporative emmisions system
Why does the service engine soon light come on 2001 Chevy Blazer LS 4WD?
When was the last time the oil was changed? My sister's minivan has that message displayed every 3 months. She takes it into the dealer and has the oil changed,which fixes it. There might be a faulty sensor sending a signal to the computer, causing the Service Engine Soon light Your Secondary Air Pump may be bad. Water gets into the pump and causes it to short out. If you get this replaced, make sure you get the breather vent extension kit installed or you'll have the same problem again in few months.
How do you reset the service engine light and the low washer fluid light?
To Reset the lights disconect the negitave lead on your battery for about 5 to 10 min then reconnect, it light is still on then you could have a bad sensor.hope this helps, Even easier.... on the fuse panel..remove the fuse for the Electronic control module for 10 minutes ( does the same thing as disconnecting the battery) then push it back in..should clear any stored codes
What is code P0307 on a 2004 durango?
Misfire detected in cylinder #7.
See related questins for more info.
Misfire detected in cylinder #7.
See related questins for more info.
Either a leak, bad gas gauge, poor driving habits. We really need more info. Before and after MPG?
Why does a check engine light come on?
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. your engine computer found a problem with a sensor or how the engine overall is running Youn need to goto a mechanic shop and have them use a scanner to diagnose the code then tell you what parts and labor it is to repair The " check engine light" is by far one of the most misunderstood technological advances It is a warning light that is illuminated when there is a problem affecting the EMISSIONS of the vehicle.. Don't let it bother you as it is a good thing once you understand it. One point that was brought up a recent meeting of technicians was that the amount of hydrocarbons is greater when the gas cap is left off than when the engine is running. Hydrocarbons are part of pollution emitted as gasoline evaporates. Going a step farther, one facet of the emission system is the "Evaporative" portion. This is when the fumes from the gasoline are leaking from the system into the outside air. This is one part of the emission system that can trigger a check engine light. I would say a small percentage of the vehicles that have a check engine light are the result of a loose or inadequate gas cap. But understand that many scenarios are possible with the "check engine light" The vehicle's powertrain computer (note that some vehicles have multiple computers aside from the powertain computer) will run a series of self-tests. They will only run under certain criteria. And they are different from manufacturer to manufacturer. Some self-tests or �monitors� are not run until preceding ones have run successfully. So if there is a problem in one particular area that is preventing another self test from running, you can have a situation where one problem is fixed, but another still exists. If you fix a problem and drive the car through a drive cycle that sets the monitor (or self test) the light will go off as it passes that criteria that triggered it in the first place. There are many different sources for the light to come on. Anything that caused combustion to fail, commonly called a misfire will set the light. Various sensors such as oxygen sensors that evaluate the exhaust before and after the gases are burned in the converter. Transmission codes may set the check engine light to appear. If the car is running okay, get it fixed in a reasonable amount of time such as within the month. It will probably save you fuel if you do. However if the Check engine light is flashing, you should be driving it as damage is being done to the converter. Some emission components are covered beyond the standard warranty. The converter for example is covered up to 80,000 miles by the manufacturer. After 1996, the auto industry went to a idea called OBD II (on board diagnostics). This was to get all the manufacturers onto a similar plane for troubleshooting and powertrain control. While they still differ, many corrections and adaptations were made for technicians to better fix the check engine light problems. Prior to this there were so many different and poor troubleshooting data from a check engine light problem that resolving the problem was much more difficult. Many early warning light of this nature were set to illuminate based on mileage. An Oxygen sensor was one of the things that were meant to be replaced when that mileage was hit. This is much like many current "Change oil lights� that are set based on a pre-set mileage. To start testing for the check engine light, you�ll need to find the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self tests the computer runs the car through a drive cycle, if a problem occurs, it may not run all of the self tests until that problem is taken care. There are self-tests for the oxygen sensor circuit, egr system, evaporative system to name a few. Therefore, another problem may exist. It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that it won�t come back on. But don�t bet on it.. 1996 Ford Contour is sometime caused by a misfire on startup. The error will clear itself after 3 complet warm-up cycles not restarts. A flashing check engine light is an indication of a severe misfire. You need immediate service. go to autozone they will hook up an OBD II scanner to your computer and explain the codes to you. 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. The check engine light comes on at start up for a bulb check. If it stays on with the engine running the computer has detected a malfunction. You need to have it checked for codes. Sometimes it comes on when you have to replace your air filter due to it being dirty. It will also come on when the gas cap is not tightened or needs to be replaced. -------------- Not all systems are able to be read by your local auto parts store. For '95 and later cars, OBD I is used and can NOT be read by autozone or advanced auto. A simple paper clip can be used to jump 2 ports on the diagnostic port and have the Engine light flash a certain sequence. This will then tell you the code to refer to for troubleshooting. Have vehicle scanned to determine problem ---------------- There could be hundreds of reasons ranging from issues with the engine control computer to a clogged exhaust. To find the answer plug a tester into the OBDII port inside the car. You'll find the port under the dash to the right of the steering wheel column. Many auto supply stores will loan you the test unit at no cost or will run the test for you. The tester will either give you a numerical code (which you then have to look up) or will tell you what the problem is on the screen. Once you've fixed the issue you can use the tester again to clear the code and the light will go off. A "Blinking" light typically means that something SEROUS has been detected. Use a code scanner to detect the problem. You will have to get a engine scanner and scan the engine. And it will give you the trouble code or codes, and then fix the problem. The computor is seeing a problem
in the engine system or transmission system. Need to repair. go to auto zone and have them check it for you. its free This could possibly be the engine management light if so it means the system has detected a fault. The car needs to be connected to diagnostic equipment for fault diagnosis and the light to be re set.
A vehicle's computer will give the mechanic specific codes but usually the underlying problem is obvious to you; for example if you unplug the electrical in seats in most newer cars, it will turn on the airbag light which will send codes to your mechanic when hooked up to their diagnostic equipment. These codes usually allow the mechanic to electronically reset the computer in the vehicle therefore turning off the dashlight, or whatever caused the computer to trip electronically... have you had the mechanic hook your car to the computer? They should know what the code means if they have the right equipment..........Hope this helps, wish you question was more specific. If your car's radio screen reads, CODE, this is usually due to a dead battery and happens the first time you go to turn radio back on......
Where is the location of Ford Taurus - Sable secondary air injection system p0411?
Secondary air system - a more geeky term for the Exhaust Gases being Recirculated back into the air intake, better known as the EGR system.
The "Related Questions" below will get you started on your EGR education - hopefully avoiding a needless replacement of a perfectly good, or 'cleanable' EGR valve (been there done that).
If the seals and or gasket is are damaged will the check engine light come on?
There are hundreds of things that can turn the check engine light on, You need to have the code checked and then you can ask a question about the code number.
How do you check engine light 1994 Nissan?
call autozone, or any of you other local part stores, they should have a device to read the the code your check engine light is caused by.. I'm pretty sure that is an obd 1 which may be harder to find a reader for.... good luck :)
