Error code

OBD2 P0302

OBD2P0302
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Cylinder 2 Misfire Detected.

Severity

moderateCan drive, but performance may be affected and it could cause further engine damage if not addressed.

Summary

P0302 indicates that cylinder 2 in the engine is misfiring, meaning it's not igniting properly during combustion.

Symptoms

  • Stumbling or lack of power
  • Engine running rough

Common Causes

  • Faulty spark plug in cylinder 2
  • Defective coil for cylinder 2
  • Wiring issues related to cylinder 2
  • Malfunctioning fuel injector in cylinder 2

Diagnosis

  1. Check for technical service bulletins related to P0302
  2. Swap ignition components between cylinder 2 and a good cylinder to isolate the issue
  3. Inspect spark plugs, fuel injectors, and wiring in cylinder 2

Fixes

  • Replace faulty spark plug or coil for cylinder 2

FAQ

What should I do if my car has a P0302 code?

It's important to diagnose the issue by checking components like the spark plug, fuel injector, and wiring in cylinder 2. If you're unsure, consult with a mechanic.

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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