2A03 - P1453

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction

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2A03 - P1453 (DME)

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

Electrical check on wire

Visual inspection of plug-in connectors (at both component and DME ends)

Use tester to trigger components

Relay replacement

Fault effect and breakdown warning

Driver information Warning light: MIL ON