Where can I find the Check Engine light codes?
This tells you where to start testing. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left. Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such as Oxygen Sensors or EGR concerns, read these as well.
Is there a way to turn off the Check Engine light?
Do I need a special tool to turn off my check engine light? Yes. If you want to turn off your check engine light yourself, then you will need an OBD code reader. It plugs into the diagnostic port commonly located under the dashboard in cars made in 1996 or after.
Why does my check engine light keep coming on?
A code reader can help you by manually allowing you to clear the fault code that has caused the check engine light to illuminate (in case it was stuck on due to an error in the car’s computer), or if there truly is something mechanically wrong then it can give you the “error code” that your car is producing.
This tells you where to start testing. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left. Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such as Oxygen Sensors or EGR concerns, read these as well.
What does the Check Engine Light code p0101 mean?
The mass air flow (MAF) sensor measures the amount of air entering the engine. Check engine light code P0101 is set when the measurement of air entering the engine by the mass air flow sensor is outside of the manufacturer’s specified range.
What does a yellow check engine light mean?
In addition to the check engine light, your dashboard may also indicate low oil pressure or overheating issues. Pull over and shut off the engine as soon as you can if these lights also illuminate. Some cars may have a red check engine light to alert you to stop right away, while a yellow light stands for investigation.
What does it mean when check engine light turns itself off?
If nothing seems to be wrong with the engine, transmission, or the way the car is driving it means that a non-evasive sensor has failed or a simple mechanical failure is present such as a vacuum leak has occurred, you can then continue driving without additional damage to any components.