What causes fault code P0313?

• Most likely: Low fuel level (Running out of gas scenario) • Likely: Faulty fuel level sensor (reporting more fuel than actually present) • Possible: Clogged fuel filter or restricted fuel flow • Rare: Failing fuel pump or damaged fuel tank baffles

How do you fix fault code P0313?

STEP 1: Refuel the vehicle with at least 15-20 liters of fuel and clear the code. This resolves the issue in most cases. STEP 2: If the code returns with a full tank, check fuel pressure using a manual gauge. Pressure should typically be 45-65 PSI depending on the application. STEP 3: Test the fuel level sensor resistance (Ohm test). Ensure the resistance changes linearly as the float moves. STEP 4: If problems persist, inspect the fuel filter for clogs and check fuel pump current draw (Amps). A failing pump often draws excessive current.

Powertrain (Engine & Gearbox)Standard EOBD

P0313 - Misfire Detected with Low Fuel

Q: What are the symptoms of fault code P0313?

• Check engine light (MIL) on or flashing • Engine hesitates or jerks during acceleration • Hard starting • Reduced engine power

Last updated:1 February 2026

Related:Fuel Level Sensor, Fuel Pump, Fuel Filter, Crankshaft Position Sensor, Ignition Coils

System

Powertrain (Engine & Gearbox)

Related Fault Codes

P0300

Random or Multiple Cylinder Misfire Detected

P0301

Cylinder 1 Misfire Detected

P0302

Cylinder 2 Misfire Detected

P0303

Cylinder 3 Misfire Detected

Technical Description

P0313 is a diagnostic trouble code (DTC) that indicates the Engine Control Module (ECM) has detected engine misfires occurring specifically when the fuel level in the tank is very low. The logic assumes that low fuel levels can cause the fuel pump to momentarily ingest air during vehicle maneuvers, leading to a drop in fuel pressure and a lean misfire condition. The ECM correlates signal data from the fuel level sender with crankshaft speed fluctuations. This code is often used to prevent unnecessary engine diagnostics when the root cause is simply a lack of fuel, which could otherwise damage the catalytic converter due to lean-burn conditions.

Possible Causes

Low fuel level (Running out of gas scenario)

Faulty fuel level sensor (reporting more fuel than actually present)

Clogged fuel filter or restricted fuel flow

Failing fuel pump or damaged fuel tank baffles

Symptoms

Check engine light (MIL) on or flashing

Engine hesitates or jerks during acceleration

Hard starting

Reduced engine power

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P0313 - Misfire Detected with Low Fuel

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P0313 - Misfire Detected with Low Fuel

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