P03B7

2017-10-10

Description:

  • Cylinder 4 Pressure Sensor Circuit Intermittent/Erratic

Possible Symptoms:

  • Check and replace spark plug in cylinder 4

  • Inspect and replace ignition coil in cylinder 4

  • Clean or replace fuel injector in cylinder 4

  • Check and clean the electrical connections in the cylinder 4 pressure sensor circuit

Possible Causes:

  • Faulty cylinder 4 pressure sensor

  • Loose or damaged wiring or connectors in the cylinder 4 pressure sensor circuit

  • Engine misfire in cylinder 4

  • Faulty engine control module (ECM)

  • Low fuel pressure in cylinder 4

Related Parts:

Possible Solutions:

  • Engine misfires or runs rough

  • Loss of power or acceleration

  • Rough idle or stalling

  • Poor fuel efficiency

  • Check Engine Light (MIL) illuminated

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