2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 131
1a. Repeatedly remove the plug and then FIRMLY insert it
again
2. Electrical check of wiring
3. Check catalytic converter (FSD lean fault may be entered
for the other bank)
4. Piston rings, injector valves, positive crankcase
ventilation OK? FSD fault? Then continue there!
5. Replace wires or plugs on O2 sensors as indicated
6. Replace O2 sensor
Fault effect and breakdown warning
Driver information
Warning light:
MIL ON
Service instruction
none
2C3A
2C3A - P0153
Information saved in
DME
Fault code
2C3A - P0153
Fault text
Oxygen sensor before catalytic converter 2, dynamics
Fault description
O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
Condition for fault identification
Test condition:
O2 sensor dynamic test
No fault memories
Drive at 50 - 80 km/h and at moderate engine speed.
Terminal condition: Terminal 15, engine on
Voltage condition:
none
Condition for fault memory entry
Reduced dynamic response from sensor
Action in service
Replace the suspect O2 sensor
If this fails to resolve the issue, inspect the wiring.
Fault effect and breakdown warning
