Monday, April 13, 2020

2010-2020 BMW 128i Diagnostic and Repair Information

2F4F

2F4F – P0503

Information saved in

DME

Fault code

2F4F – P0503

Fault text

Vehicle speed, plausibility

Fault description

Vehicle Speed Sensor ‘A’ Intermittent/Erratic/High

Condition for fault identification

Test condition:

Speed signal monitor

Mass airflow > 272 mg/stroke and

N > 2400 rpm (manual trans)

N > 2820 rpm (automatic)

and speed = 0 km/h for 5.0 sec.

Terminal condition: Terminal 15, engine on

Voltage condition:

Voltage in onboard electrical system > 10 V

Condition for fault memory entry

5 sec.

Action in service

Read diagnostic control module’s fault memory from DSC

(defective rear right wheelspeed sensor)

Fault effect and breakdown warning

Driver information

Warning light:

None

Default value from CAN