What does code P1749 mean on BMW vehicles?
The transmission control system detects a communication error with the secondary pressure solenoid.
OBD-II Code BMW
P1749 — BMW — Secondary Pressure Solenoid Communication Error
The transmission control system detects a communication error with the secondary pressure solenoid.
Common symptoms
- Erratic shifting behavior
Possible causes
- Electrical communication failure
- wiring or solenoid fault
Initial recommendation
Perform transmission electrical diagnostics and inspect secondary pressure solenoid circuit.
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
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