P0398

2017-10-10

Description:

  • The fault code P0398 indicates that there is an issue with Cylinder 1 pressure sensor.

Possible Symptoms:

  • Illuminated check engine light

  • Rough idle or stalling

  • Reduced engine power or acceleration

  • Difficulty starting the engine

Possible Causes:

  • Failed cylinder 1 pressure sensor

  • Faulty wiring or connections in the circuit

  • Failed engine control module (ECM) (less likely).

Related Parts:

  • Cylinder Pressure Sensor: Cylinder pressure Sensor monitors the pressure inside the engine cylinder during engine operation (like air intake, combustion, exhaust). Problems lead to engine misfire

Possible Solutions:

  • Replace the cylinder 1 pressure sensor

  • Check and repair any damaged wiring or connections

  • Replace the engine control module (ECM) if necessary

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