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OBD-II Code BMW

P1611 — BMW — Serial Communicating Link Transmission Control Module

The ECU detects a communication failure with the transmission control module (TCM).

Brand BMW
System Communication System
Severity High
Safe to drive? Not recommended
Advanced scanner Yes

What does code P1611 mean on BMW vehicles?

The ECU detects a communication failure with the transmission control module (TCM).

Common symptoms

  • Erratic shifting
  • transmission faults

Possible causes

  • TCM communication failure
  • CAN network issue

Initial recommendation

Perform transmission control module and CAN network diagnostics.

Safety notice

This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine BMW code P1611 with your vehicle's actual symptoms for more complete diagnostic guidance.

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