P0307

2017-10-10

Description:

  • The fault code P0307 indicates that the engine control module (ECM) has detected a misfire in cylinder 7. This means that the fuel and air mixture is not being ignited properly in this cylinder, which can cause poor performance and potentially damage the engine.

Possible Symptoms:

  • Illuminated check engine light

  • Rough idle or stalling

  • Reduced engine power or acceleration

  • Poor fuel economy

  • Engine vibration or shaking

Possible Causes:

  • Failed spark plug in cylinder 7

  • Failed ignition coil in cylinder 7

  • Clogged fuel injector in cylinder 7

  • Low compression in cylinder 7

  • Vacuum leak in cylinder 7

  • Faulty engine control module (ECM)

Related Parts:

  • Crankshaft Position Sensor: The crankshaft position sensor monitors the position of the crankshaft to regulate fuel injection. Problems lead to engine misfire and engine stalling

Possible Solutions:

  • Replace the spark plug in cylinder 7

  • Replace the ignition coil in cylinder 7

  • Clean or replace the fuel injector in cylinder 7

  • Check and repair any issues with compression in cylinder 7

  • Check for and repair any vacuum leaks in cylinder 7

  • Replace the engine control module (ECM) if necessary

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