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SensorsSeverity Medium: diagnose soon

P0344Camshaft Position Sensor "A" Circuit Intermittent (Bank 1 or Single Sensor)

What it means

The camshaft signal drops out for short moments.

Symptoms

  • Longer cranking before the engine starts
  • Occasional stalling or hesitation
  • Check engine light

Common causes

  • Faulty camshaft sensor
  • Wiring or connector fault
  • Missing 5 V or 12 V supply, or poor ground
  • Oil inside the connector (leaking sensor seal)

What to check first

  1. Scope cam and crank signals together and check their relationship
  2. Check the sensor supply and ground
  3. Inspect the connector for oil and corrosion
Can I drive with P0344? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0344: questions and answers

What does P0344 mean?

P0344: Camshaft Position Sensor "A" Circuit Intermittent (Bank 1 or Single Sensor). The camshaft signal drops out for short moments.

What are the symptoms of P0344?

Longer cranking before the engine starts. Occasional stalling or hesitation. Check engine light.

What causes P0344?

Faulty camshaft sensor. Wiring or connector fault. Missing 5 V or 12 V supply, or poor ground. Oil inside the connector (leaking sensor seal).

How do you diagnose P0344?

1. Scope cam and crank signals together and check their relationship 2. Check the sensor supply and ground 3. Inspect the connector for oil and corrosion

Can I drive with P0344?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.