Error code

OBD2 P0313

OBD2P0313
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Misfire Detected with Low Fuel.

Severity

moderateCan drive, but performance may be affected and misfires can damage the catalytic converter.

Summary

P0313 indicates a misfire detected when the fuel level is low in the tank. This code can also be set due to issues like vacuum leaks or faulty sensors even if the fuel level is not actually low.

Symptoms

  • Engine misfires
  • Decreased engine performance

Common Causes

  • Low fuel level causing air intake into fuel pump
  • Vacuum leak in inlet ducting
  • Defective fuel level indicator mechanism showing higher fuel than actual
  • Faulty fuel pump or injectors
  • Clogged fuel filter

Diagnosis

  1. Check fuel level visually
  2. Inspect inlet ducting for vacuum leaks
  3. Test fuel pump and injectors for faults
  4. Replace clogged or dirty fuel filter

Fixes

  • Address any identified issues such as replacing faulty parts or repairing vacuum leaks

FAQ

Can P0313 be caused by something other than low fuel?

Yes, it can also indicate problems like vacuum leaks, faulty sensors, or issues with the ignition system.

What should I do if my car sets this code?

Check your fuel level and inspect for vacuum leaks. If no obvious issue is found, consult a mechanic to diagnose further.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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