- Use A Scan Tool
- Apply The Battery Disconnecting Technique
- Step 1: connect the scan tool to the obd – ii
- Step 1:disconnecting car battery cables
- Step 2: draining remaining electricity
- Step 2: view error codes by pressing the “read” button
- What causes it
- What does “check engine light” mean? what happens if you ignore the check engine light? – quora
- What does the check-engine light mean? | news |
- What you should do
- You have a loose or faulty gas cap
- You need new spark plugs and wires
- You need to replace the catalytic convertor
- Your oxygen sensor needs to be replaced
Use A Scan Tool
Using a scan tool is the easiest way for check engine light reset. If you wonder to know how to turn off check engine light by this way, here are 3 steps for you.
Apply The Battery Disconnecting Technique
Using battery disconnecting technique is an old way to reset check engine light. Here are 3 steps to help you know how to reset check engine light by this method.
Step 1: connect the scan tool to the obd – ii
Connecting the scan tool to the OBD- II ( On- board diagnostic connector) under your steering column. Then you turn the ignition switch to ON and don’t forget to turn of all gadgets.
Step 1:disconnecting car battery cables
In this step, you should use a wrench to remove positive and negative cables.
Step 2: draining remaining electricity
Next thing you should do is to press and hold the car horn for about 30 seconds. This action will help to drain any
electricity from your car capacitor.
Step 2: view error codes by pressing the “read” button
Pressing the “READ” button on the scan tool to see the error codes of the engine. You should need a pen to write down the code or codes in the order they were received for future repairs or reference if needed.
What causes it
Catalytic convertors shouldn’t fail if you’re keeping up on regular maintenance. The main cause of failure is related to other items on this list, including a broken oxygen sensor or deteriorated spark plugs (we’ll get to those in a second). When it fails, it stops converting carbon monoxide into less harmful emissions.
What does “check engine light” mean? what happens if you ignore the check engine light? – quora
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What does the check-engine light mean? | news |
o-b-d.ru — The check engine light on the dashboard is a warning that many vehicle owners dread. The check engine light is a signal that the onboard diagnostics system (or OBD II) has detected a malfunction in the vehicle’s emissions, ignition, fuel or exhaust systems. It could be caused by something as simple as a loose gas cap or a faulty oxygen sensor or spark plug or something as severe as a faulty catalytic converter or major engine problems, so you shouldn’t ignore it. All cars and light trucks have onboard diagnostics that are supposed to detect engine-related problems that affect the emissions control systems.
The check engine light (typically a yellow or orange outline of an engine with the word “Check” or “Service Engine”) should come on for a few seconds every time you start the engine with other warning lights. If it stays on, that means there is a problem. If your check engine light is flashing or blinking rather than staying illuminated, it indicates a serious problem that needs to be dealt with right away. Many of the common causes of an illuminated check engine light are simple and easy to solve, but sometimes, an engine light means something serious has gone wrong.
Related: More Electrical Advice
If the check engine light is flashing or blinking, that usually indicates a misfire or other serious issue that requires prompt repair and should be dealt with quickly at an auto repair shop. Ignoring a flashing light increases the chances of additional problems, including damaging an expensive catalytic converter (which costs more than $1,000 to replace on some cars). If your engine light is blinking, take your vehicle to your mechanic right away.
If the engine light is illuminated but isn’t flashing, before rushing to a mechanic, you should first tighten the gas cap because a loose gas cap can trigger a check engine warning. See if the light goes off after several engine starts over the next day or so. Replacing a worn gas cap that doesn’t fully seal may also solve the problem.
If that doesn’t do the trick, an auto technician will need to diagnose the problem by electronically tapping into an OBD II connector under the dashboard to read diagnostic codes that will help isolate what tripped the check engine warning, such as a bad spark plug, oxygen sensor or another sensor. Many auto part stores also offer free diagnostic testing. While they will not repair your vehicle, they will read the code and let you know what the problem is. If it’s a spark plug or an easily accessible sensor, you may be able to pick up what you need and replace it yourself without making a trip to a repair shop, if you prefer the do-it-yourself approach to car repair.
Even if your vehicle seems to be performing well and your mileage isn’t dropping, it’s a bad idea to just ignore a check engine light. Something is wrong, and it’s likely to get worse. In addition, if you live in an area where vehicles have to pass periodic emissions tests, an activated check engine light usually means your vehicle will automatically fail. Depending on what’s causing the light to be illuminated, some problems, like a misfire, bad spark plug, faulty sensor or even bad fuel could decrease fuel economy.
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What you should do
Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that’s usually the cost of parts because the labor is relatively simple.
You have a loose or faulty gas cap
You wouldn’t think a gas cap would be that important, but it is. When it’s loose or cracked, fuel vapors leak out and can throw the whole fuel system off. This causes a reduction in gas mileage and increases emissions.
You need new spark plugs and wires
The spark plug seals the combustion chamber and provides a gap for a spark to jump across and initiate combustion in your engine. When the plugs are failing, the spark plugs misfire. You’ll feel a little jolt in your car’s acceleration when this happens.
You need to replace the catalytic convertor
The catalytic convertor works to reduce exhaust gases. It converts carbon monoxide and other harmful materials into harmless compounds. If your catalytic convertor is failing, you’ll notice a decrease in gas mileage or your car won’t go any faster when you push the gas.
Your oxygen sensor needs to be replaced
An oxygen sensor is a part that monitors the unburned oxygen from the exhaust. It helps monitor how much fuel is burned. A faulty sensor means it’s not providing the right data to the computer and causes a decrease in gas mileage. Most cars have between two and four oxygen sensors; the code you get from the scanner will tell you which one needs replacing.
