Saturday, July 18, 2020

2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts

2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts

none

P0030

2C9C – P0030

Information saved in

DME

Fault code

2C9C – P0030

Fault text

Oxygen sensor heating before catalytic converter, activation

Fault description

HO2S Heater Control Circuit (Bank 1 Sensor 1)

Condition for fault identification

Test condition:

Driver circuit diagnosis for O2 sensor heater

UBatt > 10V

Sensors installed

No fault memories

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

Active immediately after terminal 15 change; electr. faults

entered within a few seconds

Action in service

1. Visual inspection of wires, DME plug and O2 sensor for

damage

2. Check wires

3. Check plug-in connections DME Wiring harness

Upstream O2 sensor forward of catalyst for Bank 1

4. Replace O2 sensor

5. Replace DME

Fault effect and breakdown warning