2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction
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2E8D - P151B (DME)
2E8D - P151B
Information saved in
DME
Fault code
2E8D - P151B
Fault text
Intelligent battery sensor, function
Fault description
Battery Sensor Wakeup Circuit
Condition for fault identification
Test condition:
Terminal 15-Wakeup wire signal level implausible Terminal condition: With each change in terminal-15 status, i.e., off or on
Voltage condition: none
Condition for fault memory entry
10 sec.
Action in service
Check Terminal 15/wakeup wire for opens and intermittent contacts
With battery sensor removed and Terminal 15 off, check Terminal 15/wakeup wire for short to battery voltage -> Repair wire and/or check Terminal 15, control module wakeup
With battery sensor removed and Terminal 15 on, check Terminal 15/wakeup wire for short to ground
With battery sensor connected and Terminal 15 off, check Terminal 15/wakeup wire for shorts to battery voltage -> Replace battery sensor
With battery sensor connected and Terminal 15 on, check Terminal 15/wakeup wire for shorts to ground -> Replace battery sensor
Fault effect and breakdown warning
Driver information
Warning light:
No warning lamp or CC status report
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