P0399

Cylinder pressure sensor, cylinder 1 – circuit intermittent/erratic

DTC P0399, sometimes indicated as P039900 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the ignition system causing cylinder pressure sensor, cylinder 1 – circuit intermittent/erratic.

  • P0399: Cylinder pressure sensor, cylinder 1 – circuit intermittent/erratic
  • P0399 00: Cylinder pressure sensor, cylinder 1 - circuit intermittent/erratic

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