P0313 Code: Misfire Detected With Low Fuel

The powertrain control module (PCM) alerts the driver of low fuel levels by activating an indicator light. Most vehicles activate the low fuel indicator light when the fuel left in the tank is between one and three gallons.

Low fuel levels can also cause the engine to misfire, which can trigger diagnostic trouble code (DTC) P0313.

What Does the P0313 Code Mean?

DTC P0313 stands for “Misfire Detected With Low Fuel.”

On-board diagnostics (OBD) can log a P0313 code when the PCM identifies that the engine misfire is caused by a lean air-to-fuel mixture (too much air and not enough fuel). If there is insufficient fuel that’s exposing the fuel pump, sporadic pressure may surge and create a lean condition. Once the fuel pump is unable to pick up the remaining fuel, the PCM will log a P0313 code.

Note: The definition of code P0313 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What Are the Common Causes of the P0313 Code?

• Low fuel level
• Owner driving habits
• Faulty fuel pump sending unit
• A circuit issue, such as damaged wires or poor connections
• An issue with the PCM, such as software in need of an update

What Are the Common Symptoms of the P0313 Code?

• Poor engine performance
• Hard or no-start condition
• Hesitation upon acceleration

How to Diagnose the P0313 Code

Although DTC P0313 is a generic powertrain code, keep in mind that the steps for diagnosis and repair for this issue may vary from one vehicle to another. Vehicle specifications are important factors to consider before looking into diagnosing and repairing a P0313 code.

If you’re new to diagnosing and repairing trouble codes and unsure of what the process involves, it’s a good idea to seek help from a licensed mechanic. But if you think you have enough automotive know-how to do the job yourself, then you may go ahead and do so.

How to Fix a P0313 Code

Attempting to fix a P0313 code can be confusing and frustrating if you’re not familiar with the process and lack the right tools. If you’re not confident with your DIY skills yet, you can always bring your vehicle to the nearest repair shop and have a mechanic do the job for you. If you plan on diagnosing and clearing this trouble code on your own, make sure to rely on the right credible repair manual or refer to an online repair database before proceeding. Guides like these contain vehicle-specific repair information, so those should come in handy.

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