Take it to zuto zone and have the computer codes read. After Autozone sells you what you don't need, take it to a professional, have them fix it. Then return to autozone and get re-imbursed for there mis-diagnosis of a federally mandated emission system. Pull 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. Therefore, another problem may exist. It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that none are still active. Disconnecting the battery can create other headaches and will not likely solve your dilemma. Best bet is to contact the local snap-on dealer and have him refer you to a known good shop that specializes in this technology-he will know. The " check engine light" is by far one of the most misunderstood technological advances by the public. This is an needed in-depth understanding for the public. It is a warning light that is illuminated when there is a problem affecting the EMISSION SYSTEM only. Emission system being the pollution control system. Don't get a hard on against it as it is a good thing once you understand it. One point that was brought up a 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 that about 7% 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 17 different computers) will run a series of self-tests. They will only run under certain criteria. And they can be vastly different from manufacturer to manufacturer. Some self-tests 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. 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 vastly, 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
No, the check engine light comes on when the computer detects a malfunction and sets a code.No, the check engine light comes on when the computer detects a malfunction and sets a code.
why do check engine light comes on
Does the check engine soon light come on? If so, have the computer scanned for trouble codes (for free at auto zone in the USA) If a spark control code comes up, try changing your crank position sensor.
Buy a kit at auto parts comes with adaptors and instructions
No, but the maintenance required light may very well indicate the oil needs changing. The Check Engine light only comes on when there is a problem with the emissions system.
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.
Check the engine oil, sometimes when the oil is low the check engine light comes on while sitting still and goes out when you accelarate.
You can buy the check engine computer and the book comes with it. I know, I bought one. When your check engine light comes on, you plug it in and check the engine and it will give you the code and you look in the book for that code and it gives you the answer.
The check engine light comes on when the computer detects a malfunction and sets a code.The check engine light comes on when the computer detects a malfunction and sets a code.
Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.
A low battery can cause the electrical system to flash check engine lights
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
It is safe to drive you car for at least one mile after the check engine light comes on.
The check engine light is the light shaped like an engine, or the light that states Check Engine (Soon). If this light comes on, it is time to see what the issue is with the engine.
If an check engine light does not come on it is a good thing. When your check engine light comes on, it means you need service done on your vehicle.
Black smoke is an indication that the fuel/air mixture is far too rich. The black smoke is excess fuel being burnt.
That is the check engine light. Looks like a picture of an engine.
The check engine light comes on when the engine computer detects a malfunction and sets a trouble code.
The check engine light only comes on if there's a problem with suction (i.e. you filled the gas tank with the car running or left the gas cap open and drove. You can't reset it, you have to unhook the battery. If it comes on again, unhook the battery again. If it comes on a 3rd time, I'd see the dealer.
Yes, this is often the reason why the check engine light comes on.
The check engine light comes on in a car when there is a problem with the engine. It will go off or be reset when the problem is fixed.
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.
The check engine light stays on when the engine computer has detected a malfunction and set a trouble code.
Start by changing the bulb in the check engine light. If that does not cure the issue and this code comes back up you need to figure out what other code is up and repair that. This code indicated that 1st the bulb or circuit controlling the Check engine light is faulty or that the engine computer has run a diagnostic check and one of the systems failed.
Check your gas cap.....My check Engine light always comes on if it is loose or not on at all.