P0365 Camshaft position sensor B circuit (bank 1)
What P0365 means
The engine control unit is not getting a usable signal from camshaft position sensor B on bank 1, which on most engines reads the exhaust camshaft. Without it the ECU cannot time variable valve timing and injection as precisely, so the engine may run in a fallback mode.
P0365 is a generic SAE J2012 code: it means the same on every make. The exact cause still depends on the car, so read the freeze-frame data before replacing parts.
At a glance
- Severity
- High
- Typical repair cost
- 60–500 €
- Workshop time
- 0.5–2.5 h
- Repair difficulty
- Medium
- DIY possible
- Yes
- Check engine light
- Yes
- Affects emissions test
- Yes
Parts and labour at an independent workshop in Europe. Main dealers charge more; the cause decides the bill, not the code.
Symptoms
- Check engine light on
- Longer cranking before the engine starts
- Rough running or occasional stalling
- Reduced power or poor fuel economy
Common causes
- Faulty exhaust camshaft position sensor
- Damaged wiring or a corroded connector at the sensor
- Engine oil contamination at the connector from a leaking seal
- Damaged reluctor (trigger) wheel on the camshaft
- Timing chain or belt that has jumped a tooth
Can I keep driving with P0365?
Get it checked within a few days. The engine can stall or refuse to restart, and if the cause is timing-related, continued driving can lead to engine damage.
What to check first
- Read freeze-frame data and check for other camshaft or crankshaft codes stored at the same time
- Inspect the sensor connector and wiring for oil, corrosion, chafing or loose pins
- Measure the sensor supply, ground and signal with a multimeter or oscilloscope, then replace the sensor if the signal is missing
- If a new sensor does not help, check camshaft-to-crankshaft timing and the trigger wheel
Related codes
- P0366 Camshaft position sensor B circuit range/performance (bank 1)
- P0363 Misfire detected, fuelling disabled
- P0356 Ignition coil F primary control circuit / open
- P0355 Ignition coil E primary control circuit / open
- P0354 Ignition coil D primary control circuit/open
- P0353 Ignition coil C primary control circuit/open
- P0352 Ignition coil B primary control circuit/open
- P0351 Ignition coil A primary control circuit/open
Data: TORKO fault-code catalogue, built on OBDex (CC0-1.0) and reviewed against workshop practice. Informational only — it does not replace a diagnosis by a mechanic.
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