What does code P1451 mean on BMW vehicles?
The ECU detects a low signal condition in the DM-TL switching solenoid control circuit.
OBD-II Code BMW
P1451 — BMW — Diagnostic Module Tank Leakage (DM-TL) Switching Solenoid Control Circuit Signal Low
The ECU detects a low signal condition in the DM-TL switching solenoid control circuit.
Common symptoms
- Check engine light illuminated
Possible causes
- Damaged wiring
- high resistance
- faulty solenoid
Initial recommendation
Check DM-TL solenoid control circuit for continuity and proper voltage.
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.
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