SAE J2012 / ISO 15031-6 · powertrain

P0302: Falha de ignição detectada no cilindro 2

Falha de ignição detectada no cilindro 2: Combustion misfire isolated to Cylinder 2.

P0302 — Diagnostic Summary
Trouble Code (DTC)P0302
Official SAE DefinitionFalha de ignição detectada no cilindro 2
Vehicle Subsystempowertrain
Driving SeverityHIGH

Observable Symptoms

  • Rough idle and stumble
  • Reduced power
  • Flashing MIL

Most Probable Root Causes

  • Cylinder 2 ignition coil or spark plug failure
  • Cylinder 2 injector fault
  • Intake runner leak or valve seating issue

Step-by-Step Diagnostic Procedure

  1. Swap ignition coil with an adjacent cylinder to isolate coil fault
  2. Inspect spark plug electrode and injector resistance
  3. Verify cylinder compression