2010 BMW 128i Convertible (E88) L6-3.0L (N52K) Manufacturer Code Page 201
Fault text
Air-mass sensor, signal
Fault description
Air Mass Flow Sensor Defective
Condition for fault identification
Test condition:
Engine start completed
Terminal condition: Terminal 15
Voltage condition:
OBD1 conditions met (voltage between 10 V and 16 V)
Condition for fault memory entry
0.2 sec.
Action in service
1) Visual inspection of plug-in contacts (at both component
and DME ends)
2) Measure sensor wire, power supply and ground (possible
intermittent contact!)
3) Replace sensor
Fault effect and breakdown warning
Driver information
Warning light:
none
Service instruction
none
2D20
2D20 – P2138
Information saved in
DME
Fault code
2D20 – P2138
Fault text
Accelerator-pedal module, pedal-position sensor,
plausibility between signal 1 and signal 2
Fault description
Throttle/Pedal Position Sensor/Switch ‘D’ / ‘E’ Voltage
Correlation
Condition for fault identification
Test condition:
Pedal-position sensor monitor
Terminal condition: Terminal 15 ON
Voltage condition:
Voltage in onboard electrical system >= 10 V
Condition for fault memory entry
0.02 sec.
Action in service
1) Check: Pedal-position sensor voltages [Pot voltage 2 =
(Pot voltage1)/2]2)
Check wires from DME to PWG,
3) Visual inspection of plug terminals (on components,
wiring harness and DME),
4) Replace PWG
Fault effect and breakdown warning
