What to Do About Check Engine Light Codes
The check engine light codes are a must to be aware of when driving a vehicle. Most of us will never experience the codes but this doesn’t mean they won’t. You should check your vehicle after driving for at least twice a week to see if the codes appear. If you do not find them, you may not have a code for your vehicle. It is important that you know what they are in order to avoid having to pay for expensive repairs.
Most of the codes will be linked back to either a void fuel control valve or a mass air flow sensor. These two items typically shut off by themselves without any external cause. The check engine light comes on when the oxygen sensor or mass air flow sensor is activated. The VOAC sensor and the mass air flow sensor both shut off by themselves without the use of a switch or a circuit break.
The check light codes are extremely common and it is important to know them. They are a visual indication that something is wrong with your vehicle’s emission control system. This is why most vehicles come equipped with an oxygen sensor. Some vehicles come equipped with a Pcm codes scanner as well.
When you find the check light on your vehicle, you want to get it checked by a mechanic as soon as possible. There are some codes that indicate a serious problem and will need to be diagnosed by a professional. If you discover codes that indicate a normal failure, you can often use a different make or model of the vehicle to determine the problem. Some vehicles may only require a check of the exhaust system. Look through the owner’s manual for the codes for any other vehicles that could be causing the problem.
It is possible to scan the OBD codes yourself. In order to do this, you should use a scanner or OBD reader. You can purchase both at auto parts stores. Scanners are much more expensive than OBD readers but they provide more functionality. They also have the ability to scan multiple vehicles.
Some vehicle owners prefer to have an independent repair shop perform the scan for them. If you choose this option, you should also select a shop that is certified by the Automotive Research Museum (ARMM). Independent repair shops have trained mechanics that are experienced with diagnosing and repairing the various codes.
When you have determined that your vehicle needs a repair, you will want to purchase a check light kit. These are available at many auto parts stores as well as at independent repair shops. The kits usually include a scan tool, a programmer, a troubleshooting guide, a data recovery tool, and a user’s manual. The scan tool allows you to identify trouble codes quickly and allows you to make repairs on your own if you are not familiar with the code.
If the scan tool does not correct the problem, your next step may be to replace the knock sensor. However, there are instances where replacing the knock sensor can cause additional problems. It is possible for the knock sensor to leak oxygen sensors or to become too dirty. In this case, it is recommended that you use a new knock sensor instead of replacing it. If you are not familiar with the code, you may notice drivability problems that require you to bring your vehicle in to an auto parts store.
There are several other reasons why the scan light comes on. First, it may come on when your vehicle is undergoing diagnostic testing. Some vehicles have a separate diagnostic system. For example, an automatic vehicle will normally come equipped with its own diagnostic system. When this occurs, you will need to manually open the hood to access the codes.
Additionally, in many modern cars, a trouble code may come on if the O2 sensor fails to shut off. The O2 sensor monitors the pressure of the oxygen in the fuel. If this sensor fails to shut off, the codes will be displayed on the check light display.
When you have determined that the scan light comes on, your next step is to locate the source of the malfunction. In some cases, this source can be determined by looking at the exhaust system. Your vehicle’s exhaust system will typically have a mass air flow sensor, which is responsible for monitoring the pressure of the oxygen in the fuel. If the mass air flow sensor fails to shut off, the error message will appear on the display.