Monday, April 13, 2020

2010-2020 BMW 128i Diagnostic and Repair Information

2A03 – P1453 (DME)

2010-2020 BMW 128i Convertible (E88) L6-3.0L (N51) WWW.168MOTIVE.COM Page 65

2A03 – P1453

Information saved in

DME

Fault code

2A03 – P1453

Fault text

Secondary-air pump relay, activation

Fault description

Secondary Air Injection Pump Relay Control Circuit

Electrical

Condition for fault identification

Test condition:

Control activation monitor, in post-start phase when pump is

triggered

Terminal condition: Terminal 15 ON

Voltage condition:

Voltage in onboard electrical system > 10 V

Condition for fault memory entry

0.5 sec. with pump active

5 sec. when inactive

Action in service

1) Electrical check on wire

2) Visual inspection of plug-in connectors (at both

component and DME ends)

3) Use tester to trigger components

4) Relay replacement

Fault effect and breakdown warning