Monday, July 20, 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

P0057

2C9F – P0057

Information saved in

DME

Fault code

2C9F – P0057

Fault text

Oxygen sensor heating behind catalytic converter 2,

activation

Fault description

HO2S Heater Control Circuit Low (Bank 2 Sensor 2)

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 wiring, DME plug and O2 sensor for

damage

2. Inspect wiring

3. Check plug-in connections DME Wiring harness

downstream (post-cat) O2 sensor for Bank 2 precatalyst

4. Replace O2 sensor

5. Replace DME

Fault effect and breakdown warning