Monday, July 13, 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

P2243

271

2C3D – P2243

Information saved in

DME

Fault code

2C3D – P2243

Fault text

Oxygen sensor before catalytic converter, line fault

Fault description

O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor

1)

Condition for fault identification

Test condition:

O2 sensor wiring monitor (heater)

O2 sensor temperature is too low and the sensor signal is

implausible

No fault memories

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

Sensor temperature < 680 掳C and sensor voltage < 0.2 V

with oscillator deactivated

Action in service

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

damage

2. Inspect wires

3. Check plug-in connections DME Wiring harness

Upstream (pre-cat) O2 sensor for Bank 1 (water or

corrosion in plug?) => Repeatedly disconnect the plug and

then FIRMLY press it back in)

4. Replace O2 sensor

5. Replace DME

Fault effect and breakdown warning