Error code

OBD2 P0305

OBD2P0305
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Cylinder 5 Misfire Detected.

Severity

moderateCan be driven, but performance will suffer and may cause further engine damage if not addressed.

Summary

P0305 indicates that cylinder number five in your engine is misfiring. This issue can be detected by the Powertrain Control Module (PCM) using signals from the crankshaft and camshaft position sensors.

Symptoms

  • Decreased fuel efficiency
  • Engine shaking or rough idling

Common Causes

  • Faulty spark plug in cylinder five
  • Wiring issues related to cylinder five's ignition system
  • Defective coil for cylinder five
  • Clogged or malfunctioning fuel injector for cylinder five

Diagnosis

  1. Check the spark plug in cylinder five
  2. Inspect wiring related to cylinder five's ignition system
  3. Test the coil for cylinder five
  4. Examine the fuel injector for cylinder five

Fixes

  • Replace faulty spark plug, coil, or fuel injector in cylinder five

FAQ

What should I do if my car has a P0305 code?

You should diagnose the issue by checking the spark plug, wiring, coil, and fuel injector for cylinder five. If any of these components are faulty, they need to be replaced.

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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