Code Definition

P0313 — Random cylinder misfire with low fuel

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0313

P0313 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0313 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0313 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The engine control module (ECM) sets this code when it detects random cylinder misfires while the fuel level is low. This typically occurs due to inadequate fuel supply, which can cause lean air-fuel mixtures, improper combustion, and misfires. Low fuel can also introduce air into the fuel system, reducing injector performance.

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