Code Definition

P1300 — Misfire Detected, Fuel Level Too Low

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Audi

About P1300

P1300 is a manufacturer-specific powertrain diagnostic trouble code recorded for Audi vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1300 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.

P1300 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

Misfire monitoring works by measuring crankshaft acceleration after each firing event and identifying cylinders that fail to contribute. Because a nearly empty tank allows fuel to surge away from the pump pickup under cornering, braking and acceleration, the resulting fuel starvation produces misfires that have nothing to do with ignition or injection faults. To avoid recording misleading data and illuminating the malfunction indicator lamp for an empty tank, the Engine Control Module suppresses normal misfire fault reporting whenever the fuel level input is below a calibrated threshold, and i...

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