2010 BMW 128i Convertible (E88) L6-3.0L (N52K) Manufacturer Code Page 203
Condition for fault identification
Test condition:
Monitor for differential pressure sensor
Engine start ended
Terminal condition: Terminal 15, engine on
Voltage condition:
none
Condition for fault memory entry
0.5 sec.
Action in service
1) Visual inspection of plug-in terminals (at components and
DME)
2) Perform electrical check on sensor wire, power supply
and ground
3) Replace sensor
Fault effect and breakdown warning
Driver information
Warning light:
US: MIL ON ECE: No MIL
Service instruction
none
2D29 – P1104 (DME)
2D29 – P1104
Information saved in
DME
Fault code
2D29 – P1104
Fault text
Differential-pressure sensor, intake manifold: plausibility
Fault description
Differential Pressure Sensor Intake Manifold Pressure Too
Low (Bank 1)
Condition for fault identification
Test condition:
Differential pressure sensor monitor
6 % < Relative charge factor <120 %
-20?< Induction air temperature sensor < 85 掳C
560 rpm < Engine speed 30 sec.
regardless of EVAP active/inactive
Terminal condition: Terminal 15, engine on
Voltage condition:
Voltage in onboard electrical system >= 10 V
Condition for fault memory entry
0.2 sec.
Action in service
1) Visual inspection of vacuum sensor plug contacts
2) Check wiring between vacuum sensor and DME
3) Check induction system/crankcase for leaks (crankcase
vacuum control can allow excess air from the crankcase to
flow into the intake manifold, for instance, if vacuum line
from brake booster to vacuum pump is leaking)
Fault effect and breakdown warning
