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P0313 Misfire Detected With Low Fuel

Do not keep driving

One or more cylinders are not burning their fuel properly, so the engine loses that cylinder's contribution and pushes raw fuel into the exhaust.

Can you drive it? This class of fault can cause real mechanical damage if you keep driving on it. A persistent misfire also destroys the catalytic converter, which is the expensive part.

The definition

P0313: Misfire Detected With Low Fuel.

P0313 is a powertrain code (the engine or gearbox), defined by the SAE standard - it means the same thing on any make of car, and any generic OBD-II reader will decode it.

What to check first

Cheapest and fastest checks first:

  1. Swap the coil pack with a neighbouring cylinder and clear the code. If the misfire follows the coil, you have found it.
  2. Do the same with the spark plug, then the injector.
  3. If the misfire stays with the cylinder, do a compression test before buying parts.

Reading the code is the easy part

A code names the circuit that complained. What tells you why is watching the sensor behind it while the engine runs — and that is where a code reader stops and a diagnostic tool starts.

VAGPULSE reads every module in a VW, Audi, Skoda or SEAT — not just the engine — shows the live measuring blocks behind this fault, gives you the freeze-frame conditions it was logged under, and clears it once you have fixed it. It also does what a generic OBD reader cannot on a VAG: service resets, coding, adaptations, and Stage 1–3 flashing with your original file saved first.

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Prefer to work on your phone? The VAGPULSE Android app is a free download and its demo mode runs against a sample car with no hardware at all, so you can see exactly what it reads before spending anything. Reading your car with it needs the VAGPULSE cable, which comes with the licence.

Common questions

What does P0313 mean?

P0313 means Misfire Detected With Low Fuel. One or more cylinders are not burning their fuel properly, so the engine loses that cylinder's contribution and pushes raw fuel into the exhaust.

Can I drive with P0313?

This class of fault can cause real mechanical damage if you keep driving on it. A persistent misfire also destroys the catalytic converter, which is the expensive part.

Related reading

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