2E8E - P150B

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction

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2E8E

2E8E - P150B

Information saved in

DME

Fault code

2E8E - P150B

Fault text

Intelligent battery sensor, communication

Fault description

Battery Sensor BSD (Bit Serial Data Interface) Communication Circuit

Condition for fault identification

Test condition:

IBS communications monitor Terminal condition: Terminal 15 ON

Voltage condition:

Terminal 87 >10.0 V

Condition for fault memory entry

10 sec.

Action in service

Determine whether battery sensor is installed. If not, use SGBD to delete all adaptation data and then switch ignition off/on.

Check continuity in wire connecting DME to battery sensor (BSD_BUS)

Ensure correct fit of battery sensor on battery ground terminal and check seating of all plugs

Replace battery sensor.

Fault effect and breakdown warning

Driver information

Warning light:

No warning message. The alternator responds to loss of the BSD_BUS signal by charging at a constant 14.4 V battery.