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P0308

PowertrainIgnition Misfirehigh severity

Cylinder 8 Misfire Detected

What P0308 Means

Misfire detected in cylinder 8.

Symptoms

  • Check Engine Light
  • Rough idle
  • Loss of power

Common Causes

  • Worn spark plug #8
  • Faulty ignition coil #8
  • Faulty injector #8
  • Low compression

Diagnostic Steps

  1. Swap coil #8
  2. Inspect plug #8
  3. Test injector #8
  4. Check compression
Where to start: Swap coil to diagnose.

Related Codes

P0300P0208

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