Camshaft Position Sensor B Circuit Bank 2
2001-2003 BMW 525iT E39 2.5L I6 🇨🇦
Description
The DME detected a malfunction in the exhaust camshaft position sensor (Sensor B) circuit on Bank 2. Without a valid signal, the DME cannot accurately control VANOS timing or ignition on Bank 2.
Symptoms
- Check Engine Light
- Rough running
- Loss of power
- VANOS fault
- Engine may stall
Common Causes
- Faulty camshaft position sensor Bank 2 exhaust
- Wiring damage to sensor
- Corroded connector
- Tone wheel contamination
- Sensor air gap incorrect
Diagnostic Steps
- Test sensor signal output
- Inspect wiring and connector
- Check sensor mounting and air gap
- Inspect tone wheel condition
- Test with known-good sensor
Repair Notes
Replace the exhaust camshaft position sensor on Bank 2.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1397 on Other Vehicles
Common Questions
What does code P1397 mean on a 2001-2003 BMW 525iT E39?
P1397 stands for "Camshaft Position Sensor B Circuit Bank 2". The DME detected a malfunction in the exhaust camshaft position sensor (Sensor B) circuit on Bank 2. Without a valid signal, the DME cannot accurately control VANOS timing or ignition on Bank 2.
What are the symptoms of P1397 on a BMW 525iT E39?
Common symptoms of P1397 include: Check Engine Light, Rough running, Loss of power, VANOS fault, Engine may stall.
What causes P1397 on a 2001-2003 BMW 525iT E39?
Common causes of P1397 include: Faulty camshaft position sensor Bank 2 exhaust, Wiring damage to sensor, Corroded connector, Tone wheel contamination, Sensor air gap incorrect.