Timing and crank/cam sensorsGeneric OBD-II codeUrgency: Garage soon

P0366 on Peugeot: causes and affected engines

P0366 means: camshaft position sensor "B" circuit: performance problem or out-of-range values (bank 1).^[1][2] Peugeot has 4 documented faults that can trigger it, across 4 engines: 1.5 BlueHDi, 1.6 THP, 1.4/1.6 VTi and 1.2 PureTech. Only a diagnosis can confirm the cause on your car.

Documented faults

that can trigger it

Engines

used by Peugeot, with at least one of them

Peugeot models

with at least one of these faults

Urgency

Garage soon

Reviewed on 29 October 20263 sources How we work

Documented faults in Peugeot engines that can trigger P0366

Grouped by engine or model, from most to least important. These are faults with the variable valve timing actuator and with the timing chain: not all of them will necessarily set the code, and only a diagnosis confirms the cause on your car.

1.5 BlueHDi

In 208 I, 208 II, 308 II, 308 III, 508 II, 2008 I and 5 more models

- Critical severityFrequency: Very frequentTimingWear and breakage of the 7 mm chain between the camshaftsIn 1.5 BlueHDi engines built between October 2017 and January 2023, the 7 mm chain linking the camshafts can stretch and break, causing serious engine damage. Stellantis has recalled them and covers the fault for 10 years or 240,000 km.Repair (garage): €730–€820

1.6 THP

In 207, 208 I, 308 I, 508 I and RCZ

- Critical severityFrequency: CommonTimingTiming chain and tensioner stretch (turbo versions, before 2012)Yes: on the turbo versions of the 1.6 THP, built mostly before 2012, the timing chain and its tensioner wear out prematurely; if the chain jumps teeth, the engine can go out of time or seize. BMW, co-designer of the block, issued a technical bulletin on this fault in 2013.

1.4/1.6 VTi

In 207, 208 I, 308 I, 2008 I and 3008 I

- Critical severityFrequency: OccasionalTimingWear of the timing chain and tensionerYes, although with fewer documented cases than on the turbocharged 1.6 THP: a German garage says the timing chain and its tensioner can wear in any version of the Prince family, including the naturally aspirated one, although the most reported cases in forums are on the turbo engine.

1.2 PureTech

In 208 II, 308 III, 408, 2008 II, 3008 II, 3008 III and 2 more models

- High severityFrequency: RareTimingTiming misalignment from the camshaft sprocket bolts (chain-driven generation)On the third-generation 1.2 (chain-driven) built up to 17 February 2024, the camshaft sprocket bolts could be incorrectly fitted and throw the timing out: engine warning light, loss of power and, in the worst case, contact between pistons and valves.

Common causes of P0366 on any make

From most to least likely, according to the sources.

1Camshaft sensor "B" generating a noisy or out-of-phase pulse.^[1]
2Loose or corroded connector terminals, or oil in the connector.^[1]
3Harness chafed, pinched or heat-damaged, or damaged shielding that lets interference in.^[1]
4Camshaft wheel damaged or dirty, or incorrect gap between sensor and wheel.^[1][3]

What to check first

The first diagnostic steps, from the most likely and cheapest to check to the most expensive.

1Read the codes and the freeze-frame data. Look for accompanying codes from the P0365 to P0369 family, sensor "A" (P0340 to P0344), the crankshaft (P0335, P0336) or variable valve timing.^[1][3]
2As it is often an intermittent fault, test with the engine warm, wiggling the harness and connector while watching the signal.^[1]
3Check the camshaft connector, harness, sensor and wheel: oil, terminals, damage and gap to the sensor.^[1][3]

Full guide to P0366: symptoms, diagnosis and whether you can drive

Frequently asked questions

Which Peugeot engines have faults that can trigger P0366?

1.5 BlueHDi (1 fault), 1.6 THP (1 fault), 1.4/1.6 VTi (1 fault) and 1.2 PureTech (1 fault). Each fault has its own page with the affected years and versions, the symptoms and the repair cost.

What does code P0366 mean on a Peugeot?

Camshaft position sensor "B" circuit: performance problem or out-of-range values (bank 1). The signal from camshaft sensor "B" on bank 1 (normally the exhaust one) arrives, but does not behave as the ECU expects: it is noisy, arrives at the wrong point in the crankshaft's rotation or is not plausible when compared with it. It is a generic OBD-II code: it means the same on a Peugeot as on any other make.^[1][2]

Can I keep driving with P0366?

Garage soon. AutoDTCs rates it as moderate severity: you can usually keep driving, but there may be stalling, hard starting or loss of power, so it should be diagnosed before you depend on the car.^[1]

Sources

Every fact on this page links to its source. If you find an error, let us know.

P0366 – Camshaft Position Sensor “B” Circuit Range/Performance Bank 1AutoDTCs · Technical documentation · consulted 29 October 2026
p0366 Generic DTC: Camshaft Position Sensor "B" Circuit Range/PerformanceDTCSearch · Technical documentation · consulted 29 October 2026
How to Test Crankshaft and Camshaft Position SensorsAutoDTCs · Technical documentation · consulted 29 October 2026