2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 220
Fault description
Engine Oil Quality Sensor Circuit
Condition for fault identification
Test condition:
Oil status sensor communications monitor
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system > 9 V
Condition for fault memory entry
20 sec.
Action in service
1. Check wire (BSD_BUS) connecting oil sensor (QLT) and
DME.
2. Check plug-in connection at QLT.
3. Replace QLT
Fault effect and breakdown warning
Driver information
Warning light:
No warning message. No oil level display or oil temperature
measurement is possible without the BSD_BUS signal.
Service instruction
none
2ECC
2ECC - U1132
Information saved in
DME
Fault code
2ECC - U1132
Fault text
Generator, communication
Fault description
Lost Communication With Generator via BSD (Bit Serial
Data Interface)
Condition for fault identification
Test condition:
Commercial vehicle >350 rpm,
No communications fault
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system > 10 V
Condition for fault memory entry
25 sec.
Action in service
1. Check wire (BSD_BUS) connecting alternator and DME.
2. Check plug-in connection at alternator.
3. Replace alternator.
Fault effect and breakdown warning
Driver information
Warning light:
No warning message. The alternator responds to loss of the
