What does code P1397 mean on BMW vehicles?
The ECU detects a circuit malfunction in camshaft position sensor B on Bank 1.
OBD-II Code BMW
P1397 — BMW — Camshaft Position Sensor "B" Circuit (Bank 1)
The ECU detects a circuit malfunction in camshaft position sensor B on Bank 1.
Common symptoms
- Limp mode
- hesitation
- poor engine response
Possible causes
- Faulty CMP sensor
- damaged wiring or connector
Initial recommendation
Perform camshaft position sensor diagnostics and inspect wiring.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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