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P039F

Cylinder 2 Pressure Sensor Circuit

Generic OBD-II

Common symptoms

What you'll notice

Common causes

Most likely first

  1. Faulty cylinder 2 pressure sensor
  2. Loose or damaged wiring/connectors in the cylinder 2 pressure sensor circuit
  3. Low engine oil level or pressure affecting cylinder 2
  4. Defective engine control module (ECM)
  5. Cylinder 2 misfire or compression issue

How to diagnose & fix

Work through it in order

  1. Engine misfires or stumbles
  2. Rough idling or unstable engine performance
  3. Decreased power and acceleration
  4. Increased fuel consumption
  5. Illuminated check engine light

Read & clear P039F yourself

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