Monday, April 13, 2020

2010-2020 BMW 128i Diagnostic and Repair Information

2A39 – P1024 (DME)

2A39 – P1024

Information saved in

DME

Fault code

2A39 – P1024

Fault text

Valvetronic, adjustment range

Fault description

VVT-Self-Learning Function Faulty Lower Learning Range

(Bank 1)

Condition for fault identification

Test condition:

Adjustment range monitor When travel limit initialization

routine is executed. (travel limit initialization routine is

automatically executed in a 5 hour (engine operating hours)

cycle or with ‘initialize travel limits’ tester request.

Terminal condition: Terminal 15 ON

Voltage condition:

2010-2020 BMW 128i Convertible (E88) L6-3.0L (N51) WWW.168MOTIVE.COM Page 93

Electrical system voltage Terminal 87 >10.0 V

Condition for fault memory entry

following renewed successful execution of the travel limit

initialization routine

Action in service

1. Use tester request to repeat the VVT travel limit

initialization routine 2. If Item No.1 is not OK, it will be

necessary to check the VVT mechanical components /VVT

servo motor

Fault effect and breakdown warning

Driver information

Warning light:

ECE: No warning message. Engine reverts to VVT

emergency backup mode (throttled operation) US: OPEN