OBD-II Code P0313 – Misfire Detected With Low Fuel
As a certified mechanic, it is essential for me to diagnose the car’s issues effectively and accurately. OBD codes help me diagnose the car’s problem with ease. OBD-II Code P0313 is one of the codes that indicate a problem in your vehicle. If your car’s check engine light turns on and you’re unfamiliar with this code or you have received this code after scanning your car, don’t worry. I will explain what this code means, how to repair the issue, and everything in between in this article.
What is OBD-II Code P0313?
OBD-II Code P0313 indicates a misfire in one or more cylinders when the fuel level is low. A misfire is a condition where the spark plug does not ignite the air-fuel mixture in the engine’s cylinder correctly. It results in incomplete combustion, leading to a loss of power, reduced fuel efficiency, and emission of harmful chemicals. A combination of low fuel levels and misfires can cause engine damage or failure.
What are the causes of OBD-II Code P0313?
Several factors can cause OBD-II Code P0313. These include:
1. Low fuel level: One of the primary causes of Code P0313 is low fuel levels. Running a car on empty can damage the fuel pump and injectors, causing misfires.
2. Worn-out spark plugs: Worn-out spark plugs can cause misfires, leading to Code P0313.
3. Clogged fuel injectors: Clogged fuel injectors obstruct the fuel supply, causing a lean or rich air-fuel mixture, leading to misfires.
4. Faulty ignition coil: The ignition coil creates the spark to ignite the mixture. A faulty coil cannot create the correct spark, resulting in misfires.
How to Repair the Issue
Now that you know what Code P0313 means and its potential causes, here are some steps you can take to repair the problem:
1. Refuel Your Car: If your car’s fuel level is low, fill it up to prevent Code P0313 from occurring.
2. Replace Spark Plugs: If the spark plugs are old or have wear and tear, replace them with new ones. New spark plugs will ignite the air-fuel mixture efficiently, preventing misfires.
3. Test Fuel Injectors: If fuel injectors are faulty, they need to be tested and cleaned or replaced with new ones.
4. Replace Ignition Coil: If the ignition coil is defective, replace it with a new one.
Frequently Asked Questions (FAQs)
1. Can I continue driving my car with OBD-II Code P0313?
It is not advisable to drive your car with Code P0313 as it can lead to engine damage or failure. Fix the issue as soon as possible.
2. Can I fix Code P0313 by myself?
If you have knowledge and experience in automotive repair, you can fix Code P0313. If not, it is best to consult a professional mechanic.
3. Is Code P0313 dangerous?
Code P0313 itself may not be dangerous, but running your car with misfires can cause damage to the engine, catalytic converter, and other components.
4. How can I prevent Code P0313 from happening again?
Ensure your car always has sufficient fuel levels. Schedule regular maintenance, replace worn-out spark plugs, and periodically clean or replace fuel injectors.
5. Can Code P0313 affect fuel efficiency?
Yes. Misfires cause incomplete combustion, leading to a decrease in fuel efficiency.
In conclusion, OBD-II Code P0313 is a code that indicates a misfire in one or more cylinders when the fuel level is low. Causes of the code may include low fuel levels, worn-out spark plugs, clogged fuel injectors, and faulty ignition coils. To repair the issue, one can refuel their car, replace spark plugs, test fuel injectors, or replace the ignition coil. It is not advisable to continue driving with Code P0313, and preventive measures include scheduling regular maintenance, periodic cleaning or replacement of fuel injectors, and ensuring that the car has sufficient fuel levels.