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2011 MAZDA MAZDA3

2.5L I4•FWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor564Torque3673Fluid6DTC889Battery0Maintenance0Recalls2
P0303high severityPowertrain

Cylinder 3 Misfire Detected

on 2011 Mazda Mazda3 2.5L I4 · FWD

What this code means

Misfire detected in cylinder 3.

Symptoms

  • Check Engine Light
  • Rough idle
  • Vibration
  • Loss of power

Common causes

  • Worn spark plug #3
  • Faulty ignition coil #3
  • Faulty injector #3
  • Low compression cyl 3

Diagnostic steps

  1. Swap coil #3
  2. Inspect spark plug #3
  3. Test injector #3
  4. Check compression

Repair notes

Swap coil to diagnose.

Other Powertrain codes on this vehicle

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