Monday, April 13, 2020

2010-2020 BMW 128i Diagnostic and Repair Information

2010-2020 BMW 128i Convertible (E88) L6-3.0L (N51) WWW.168MOTIVE.COM Page 63

2A1C

2A1C – P0461

Information saved in

DME

Fault code

2A1C – P0461

Fault text

Tank fill level, plausibility

Fault description

Fuel Level Sensor ‘A’ Circuit Range/Performance

Condition for fault identification

Test condition:

Excess mechanical resistance in the level sensor causes the

level signal to change too slowly relative to engine fuel

consumption, leading to generation of a fault memory entry

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

20 liters of fuel consumption required

Action in service

1. Check level sensor data directly at flange

2. Check variation in sensor data by rocking / knocking on

the tank

3. Carefully open the tank flange, check for stiction in the

float lever

4. Replace the fuel level sensor only if stiction is found in

the float lever (distorted sensor lever, bearing resists motion)

Fault effect and breakdown warning