2010 BMW 128i Convertible (E88) L6-3.0L (N52K) Manufacturer Code Page 114
Driver information
Warning light:
MIL ON
Service instruction
none
2CA7 – P166F (DME)
2CA7 – P166F
Information saved in
DME
Fault code
2CA7 – P166F
Fault text
Oxygen sensor heating before catalytic converter 2, function
Fault description
Internal Control Module Measurement Error Oxygen Sensor
Heating (Bank 2, Sensor 1)
Condition for fault identification
Test condition:
Internal control-module fault, attempt to determine O2
sensor temperature failed
No fault memories
Terminal condition: Terminal 15, engine on
Voltage condition:
none
Condition for fault memory entry
Processor chip monitor, no valid temperature for more than
5 sec.
Action in service
Replace DME
Fault effect and breakdown warning
Driver information
Warning light:
none
Service instruction
none
2CA8
2CA8 – P0141
Information saved in
DME
Fault code
2CA8 – P0141
Fault text
Oxygen sensor heating behind catalytic converter, function
Fault description
O2 Sensor Heater Circuit (Bank 1 Sensor 2)
Condition for fault identification
Test condition:
Check internal resistance of O2 sensor to check sensor
heater => If the heater is too weak, the O2 sensor’s internal
