2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 247
Voltage condition:
Terminal 87 >10.0 V
Condition for fault memory entry
10 sec.
Action in service
1. Determine whether battery sensor is installed. If not, use
SGBD to delete all adaptation data and then switch ignition
off/on.
2. Check continuity in wire connecting DME to battery
sensor (BSD_BUS)
3. Ensure correct fit of battery sensor on battery ground
terminal and check seating of all plugs
4. 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.
Service instruction
none
2E9F - P1521 (DME)
2E9F - P1521
Information saved in
DME
Fault code
2E9F - P1521
Fault text
Oil condition sensor
Fault description
Engine Oil Quality Sensor Communication Error
Condition for fault identification
Test condition:
The sensor fails to respond
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system > 9 V
Condition for fault memory entry
30 sec.
Action in service
Wiring harness check / sensor replacement
Fault effect and breakdown warning
Driver information
Warning light:
CC message 182 - suppressed starting with E90 with
