P151B

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
1. Check Terminal 15/wakeup wire for opens and
intermittent contacts
2. 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
3. With battery sensor removed and Terminal 15 on, check
Terminal 15/wakeup wire for short to ground
4. With battery sensor connected and Terminal 15 off, check
Terminal 15/wakeup wire for shorts to battery voltage ->
Replace battery sensor
5. 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 None status report

Service instruction
none