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SensorsSeverity Medium: diagnose soon

P0366Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)

What it means

The camshaft signal is present but doesn't line up with the crankshaft as expected, or has an unexpected pattern.

Symptoms

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

Common causes

  • Stretched timing chain or jumped belt
  • Faulty cam phaser
  • Damaged trigger wheel on the camshaft
  • Faulty sensor

What to check first

  1. Scope cam and crank signals together and check their relationship
  2. Check the sensor supply and ground
  3. Check the timing marks
Can I drive with P0366? 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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P0366: questions and answers

What does P0366 mean?

P0366: Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1). The camshaft signal is present but doesn't line up with the crankshaft as expected, or has an unexpected pattern.

What are the symptoms of P0366?

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

What causes P0366?

Stretched timing chain or jumped belt. Faulty cam phaser. Damaged trigger wheel on the camshaft. Faulty sensor.

How do you diagnose P0366?

1. Scope cam and crank signals together and check their relationship 2. Check the sensor supply and ground 3. Check the timing marks

Can I drive with P0366?

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