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P2339 MERCURY

P2339 MERCURY - Cylinder 4 Above Knock Threshold

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty knock sensor
  • Knock sensor circuit poor electrical connection
  • Knock sensor harness is open or shorted
  • Faulty Engine Control Module (ECM)

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Possible Lack/Loss of Power

P2339 Mercury Description

The Knock Sensor (KS) senses engine knocking (also known as detonation or pinging) using a piezoelectric element. The sensor is attached to the cylinder block, cylinder head or intake manifold. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Engine Control Module (ECM). The ECM uses this signal to retard the ignition timing and protect the engine from this damaging pre-ignition.
OBDII Code P2339 Mercury - Cylinder 4 Above Knock Threshold - AutoCodes.com

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P2339 MERCURY Comments

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