P0365 Camshaft Position Sensor B Circuit (Bank 1)

P0365 indicates a malfunction in Camshaft Position Sensor B circuit on Bank 1. The controller is not receiving a valid signal from the Bank 1 secondary cam position input.

Code details

Generic OBD-II · P0

System: Ignition / Misfire
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the cam sensor before checking Bank 1 timing, oil control, and the complete sensor circuit.

Symptoms of P0365

Rough idle, shaking, or a stumble under acceleration.
A flashing check-engine light during an active misfire.
Power loss and higher fuel consumption.

Common causes of P0365

Worn spark plugs, ignition coils, or plug wires.
Fuel-delivery problems — injectors, pressure, or a lean/rich mixture.
Vacuum leaks, low compression, or a mechanical fault in that cylinder.

Useful checks before replacing parts

Compare Camshaft Position Sensor B Bank 1 data, cam-crank sync, freeze-frame RPM, VVT command, and related timing or correlation codes.
Inspect sensor power, ground, signal wiring, connector condition, oil intrusion, mounting, target wheel condition, and timing component wear.
Check the signal at the sensor and at the controller to separate sensor, wiring, mechanical timing, and PCM input faults.

Related OBD-II codes

These nearby ignition / misfire entries can help compare wording and pin down the fault area.