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P0366: Camshaft position sensor B signal out of range (bank 1)

The camshaft signal does not line up with the crankshaft signal. It may be the sensor or wiring, but also incorrect timing.

Code P0366 at a glance
CodeP0366
SystemEngine and transmission
GroupP03xx, Ignition and misfires
TypeGeneric: it means the same on every make
Can you keep driving?With care

What P0366 means

The camshaft sensor tells the ECU which stroke each cylinder is on, so it can inject at the right moment and control variable valve timing if fitted. Here the signal arrives, but not at the moment the ECU expects relative to the crankshaft, or irregularly, and sometimes the sensor is fine and the real problem is the timing between camshaft and crankshaft. Bank 1 is the side of the engine with cylinder 1; on inline engines it is the only bank. Which sensor is "B" is up to each manufacturer (often the intake cam is A and the exhaust cam is B).

Most common causes

  • Poor connector contact or wiring picking up interference
  • Sensor dirty or not seated properly
  • Failed sensor
  • Wrong oil level or worn oil, affecting variable valve timing
  • Stretched timing belt or chain, or timing one tooth out
  • Damaged reluctor on the camshaft

Symptoms

  • Longer cranking before the engine starts
  • Less power or slower response
  • Slightly rough idle
  • Engine warning light on

Can you drive with P0366?

With care You can usually keep driving, as the ECU can manage using the crankshaft sensor, but the engine is down on power and may be hard to start. Get it checked soon.

How to check it

Check the oil level on the dipstick first. And if the timing belt or chain was recently replaced, tell the garage, as that is the first thing to check.

How to read and clear P0366 with Final OBD

Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0366 with this same explanation and whether it’s confirmed, pending or permanent.

With Free you read this code with its short description for nothing, and clear it if the engine stores it over standard OBD. With Pro you get the full explanation, how the car was running when it was logged (revs, temperature, load) and clearing in every control unit.

Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before the ITV. It’s all in how to read and clear fault codes and in the ITV and OBD.

Similar codes

P0366 is a generic code, so it means the same on any make, for example on Alfa Romeo, Dacia, Jeep, Kia, Nissan, Škoda. See what Final OBD does on your car in makes and models.

What does code P0366 mean?

The camshaft sensor tells the ECU which stroke each cylinder is on, so it can inject at the right moment and control variable valve timing if fitted. Here the signal arrives, but not at the moment the ECU expects relative to the crankshaft, or irregularly, and sometimes the sensor is fine and the real problem is the timing between camshaft and crankshaft. Bank 1 is the side of the engine with cylinder 1; on inline engines it is the only bank. Which sensor is "B" is up to each manufacturer (often the intake cam is A and the exhaust cam is B).

Can you drive with P0366?

You can usually keep driving, as the ECU can manage using the crankshaft sensor, but the engine is down on power and may be hard to start. Get it checked soon.

How do you clear P0366?

With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0366 comes back.