5 Signs Your Engine Light Is On (But It’s Not Serious)

A permanent engine code is a diagnostic trouble code (DTC) that has been stored in the vehicle’s computer even after the problem has been repaired. Clearing the code may be necessary in order to get the check engine light to turn off. However, it is important to note that clearing the code does not actually fix the problem. It simply tells the computer that the problem has been repaired and that the light can be turned off.

Here are the steps on

1. Turn the ignition switch to the On position without starting the engine.
2. Press and hold the Gas pedal and the Brake pedal at the same time.
3. While holding the pedals down, turn the ignition switch to the Off position.
4. Release the pedals and wait 5 seconds.
5. Turn the ignition switch to the On position and start the engine.

The check engine light should now be turned off.

So How To Clear A Permanent Engine Code

1. A loose gas cap:
This is the most common cause of an illuminated check engine light. A loose gas cap can allow air to enter the fuel system, which can throw off the air-fuel mixture and cause the engine to run inefficiently.

2. A dirty mass air flow sensor:
The mass air flow sensor measures the amount of air flowing into the engine. If the sensor is dirty, it can provide inaccurate readings to the engine computer, which can cause the engine to run inefficiently.

3. A faulty oxygen sensor:
The oxygen sensor monitors the amount of oxygen in the exhaust gas. If the sensor is faulty, it can provide inaccurate readings to the engine computer, which can cause the engine to run inefficiently.

4. A bad spark plug:
A bad spark plug can cause the engine to misfire, which can lead to a decrease in fuel efficiency and increased emissions.

5. A faulty fuel injector:
A faulty fuel injector can cause the engine to run rich or lean, which can lead to a decrease in fuel efficiency and increased emissions.

How to Clear a Permanent Engine Code

What is a Permanent Engine Code?

A permanent engine code is a diagnostic trouble code (DTC) that has been stored in the vehicle’s computer memory even after the problem that caused the code to be set has been repaired. Permanent engine codes can be caused by a variety of problems, including:

A faulty sensor
A misfire
A fuel injector problem
A problem with the engine’s computer

How to Clear a Permanent Engine Code

There are a few different ways to clear a permanent engine code. The most common way is to use a scan tool. A scan tool is a device that connects to the vehicle’s computer and allows you to read and clear diagnostic trouble codes.

To clear a permanent engine code with a scan tool, follow these steps:

1. Turn off the engine and disconnect the negative battery cable.
2. Connect the scan tool to the vehicle’s OBD-II port.
3. Turn on the scan tool and select the Read Codes option.
4. The scan tool will display a list of all the diagnostic trouble codes that are stored in the vehicle’s computer.
5. Locate the permanent engine code and select the Clear Code option.
6. Reconnect the negative battery cable.
7. Start the engine and let it run for a few minutes.

The permanent engine code should now be cleared.

Troubleshooting Tips

If you are unable to clear a permanent engine code with a scan tool, you may need to troubleshoot the problem further. Here are a few troubleshooting tips:

Check the wiring to the sensor that is associated with the permanent engine code.
Replace the sensor that is associated with the permanent engine code.
Perform a compression test on the engine.
Check the fuel injectors for leaks or blockages.
Have the vehicle’s computer scanned by a qualified technician.

Conclusion

Permanent engine codes can be a nuisance, but they can usually be cleared with a scan tool. If you are unable to clear a permanent engine code, you may need to troubleshoot the problem further. If you are having trouble clearing a permanent engine code, you should contact a qualified technician for help.

FAQs on How to Clear a Permanent Engine Code

What is a permanent engine code?

A permanent engine code is a diagnostic trouble code (DTC) that has been stored in the vehicle’s computer even after the problem that caused it has been repaired.

How do I clear a permanent engine code?

There are a few different ways to clear a permanent engine code. The most common method is to use a scan tool to read the code and then clear it. Another method is to disconnect the battery for a short period of time. However, this method may not work if the code is stored in the vehicle’s memory.

What are the risks of clearing a permanent engine code?

There are a few risks associated with clearing a permanent engine code. First, if the problem that caused the code to be stored is not repaired, the code may reappear. Second, clearing a code may erase other important information from the vehicle’s computer, such as the fuel trims.

When should I clear a permanent engine code?

You should only clear a permanent engine code if you have repaired the problem that caused it. Clearing the code without repairing the problem could lead to the code reappearing and other problems occurring.

What are some common causes of permanent engine codes?

Some common causes of permanent engine codes include:

A faulty sensor
A bad fuel injector
A problem with the ignition system
A problem with the exhaust system
A problem with the transmission