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

(DME) Condition For Fault Memory Entry – 1

2C3E – P112D

Information saved in

DME

Fault code

2C3E – P112D

Fault text

Oxygen sensor before catalytic converter 2, line fault

Fault description

O2 Sensor Negative Current or Positive Current Control

Circuit/Open (Bank 2 Sensor 1)

Condition for fault identification

Test condition:

O2 sensor wiring monitor

O2 sensor signal freezes.

No fault memories

Drive at 50 – 80 km/h at moderate engine speed

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

Voltage seizes at 2V (Lambda = 1) OR voltage < 2.1 V with

overrun injection deactivation active

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 remove the plug and then

reconnect it FIRMLY)

4. Check catalytic converter (is FSD lean fault entered for

the other bank?)

5. Piston rings, injectors, positive crankcase ventilation OK?

FSD fault? Then continue there!

6. Replace O2 sensor

7. Replace DME

Fault effect and breakdown warning

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

(DME) Condition For Fault Memory Entry – 1

2C3D – P112C

Information saved in

DME

Fault code

2C3D – P112C

Fault text

Oxygen sensor before catalytic converter, line fault

Fault description

60

O2 Sensor Negative Current or Positive Current Control

Circuit/Open (Bank 1 Sensor 1)

Condition for fault identification

Test condition:

O2 sensor wiring monitor

O2 sensor signal freezes.

No fault memories

Drive at 50 – 80 km/h at moderate engine speed

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

Voltage seizes at 2V (Lambda = 1) OR voltage < 2.1 V with

overrun injection deactivation active

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 remove the plug and then

reconnect it FIRMLY)

4. Check catalytic converter (is FSD lean fault entered for

the other bank?)

5. Piston rings, injectors, positive crankcase ventilation OK?

FSD fault? Then continue there!

6. Replace O2 sensor

7. Replace DME

Fault effect and breakdown warning

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

(DME) Condition For Fault Memory Entry – 1

2A46 – P101A

Information saved in

DME

Fault code

2A46 – P101A

Fault text

Valvetronic, adaptation

Fault description

VVT-Self-Learning Function, Stops Not Learned

Condition for fault identification

Test condition:

Monitoring of VVT system for mechanical wear.

Terminal condition: none

Voltage condition:

none

Condition for fault memory entry

100 ms

Action in service

Remove the valve cover and inspect for indications of

mechanical wear (such as rocker arm wear, etc.)

Fault effect and breakdown warning

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

(DME) Condition For Fault Memory Entry – 1

2A38 – P1030

Information saved in

DME

Fault code

2A38 – P1030

Fault text

Valvetronic, monitoring, sluggish movement

Fault description

VVT-Actuator Monitoring Position Control, Control

Deviation (Bank 1)

Condition for fault identification

Test condition:

VVT system monitoring for stiction and resistance to

motion.

Always active when no other VVT fault is present.

Terminal condition: Terminal 15 ON

Voltage condition:

Electrical system voltage terminal 87 >10.0 V

Condition for fault memory entry

55 ms

Action in service

1. Use tester to request initialization of travel limits and note

whether travel limit initialization routine executes without

problems. 2. If Item 1 is not OK, replace VVT motor and

repeat Item 1

3. If replacing VVT motor fails to resolve the problem:

Open the valve cover and check the VVT for mechanical

stiction and seizure.

Fault effect and breakdown warning

Driver information

Warning light:

ECE: No warning message. Engine reverts to VVT

emergency backup mode (throttled operation) US: OPEN

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

(DME) Condition For Fault Memory Entry – 1

2CA7 – P0155

Information saved in

DME

Fault code

92

2CA7 – P0155

Fault text

Oxygen sensor heating before catalytic converter 2, function

Fault description

O2 Sensor Heater Circuit (Bank 2 Sensor 1)

Condition for fault identification

Test condition:

Check O2 sensor heater; sensor too cold

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

O2 sensor temperature < 680 掳C for more than 5 sec.

Action in service

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

damage

2. Check wires (including resistance)

3. Check plug-in connections DME Wiring harness

Upstream (pre-cat) O2 sensor for Bank 2 (water or

corrosion in the plug? => Repeatedly disconnect the plug

and then FIRMLY press it back in)

4. Replace O2 sensor

5. Replace DME

Fault effect and breakdown warning

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

(DME) Condition For Fault Memory Entry – 1

2CA6 – P0135

Information saved in

DME

Fault code

2CA6 – P0135

Fault text

Oxygen sensor heating before catalytic converter, function

Fault description

O2 Sensor Heater Circuit (Bank 1 Sensor 1)

Condition for fault identification

Test condition:

Check O2 sensor heater; sensor too cold

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

O2 sensor temperature < 680 掳C for more than 5 sec.

Action in service

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

damage

2. Check wires (including resistance)

3. Check plug-in connections DME Wiring harness

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

corrosion in the plug? => Repeatedly disconnect the plug

and then FIRMLY press it back in)

4. Replace O2 sensor

5. Replace DME

Fault effect and breakdown warning

2010-2020 BMW 128i Diagnostic and Repair Information

(DME) Condition For Fault Memory Entry – 1

2A38 – P1030

Information saved in

DME

Fault code

2A38 – P1030

Fault text

Valvetronic, monitoring, sluggish movement

Fault description

VVT-Actuator Monitoring Position Control, Control

Deviation (Bank 1)

Condition for fault identification

Test condition:

VVT system monitoring for stiction and resistance to

motion.

Always active when no other VVT fault is present.

Terminal condition: Terminal 15 ON

Voltage condition:

Electrical system voltage terminal 87 >10.0 V

Condition for fault memory entry

2010-2020 BMW 128i Convertible (E88) L6-3.0L (N51) WWW.168MOTIVE.COM Page 91

55 ms

Action in service

1. Use tester to request initialization of travel limits and note

whether travel limit initialization routine executes without

problems. 2. If Item 1 is not OK, replace VVT motor and

repeat Item 1

3. If replacing VVT motor fails to resolve the problem:

Open the valve cover and check the VVT for mechanical

stiction and seizure.

Fault effect and breakdown warning

Driver information

Warning light:

ECE: No warning message. Engine reverts to VVT

emergency backup mode (throttled operation) US: OPEN