P039C

2017-10-10

Description:

  • Cylinder 1 Pressure Variation Low

Possible Symptoms:

  • Check and replace the spark plug in cylinder 1.

  • Inspect and clean the fuel injector in cylinder 1.

  • Check and replace the ignition coil in cylinder 1.

  • Verify and adjust the valve clearance in cylinder 1.

  • Perform a compression test on cylinder 1 and repair any issues found.

Possible Causes:

  • Faulty or clogged fuel injector for cylinder 1

  • Low compression in cylinder 1 due to worn piston rings or valves

  • Faulty ignition coil or spark plug for cylinder 1

  • Vacuum leak in the intake manifold affecting cylinder 1

  • Engine misfire caused by a faulty crankshaft position sensor

Related Parts:

Possible Solutions:

  • Engine misfires or runs rough

  • Reduced power or acceleration

  • Poor fuel efficiency

  • Difficulty starting the engine

  • Illuminated check engine light

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