What does code P1446 mean on BMW vehicles?
The ECU detects a high signal condition in the DM-TL pump control circuit.
OBD-II Code BMW
P1446 — BMW — Diagnostic Module Tank Leakage (DM-TL) Pump Control Circuit Signal High
The ECU detects a high signal condition in the DM-TL pump control circuit.
Common symptoms
- Check engine light
Possible causes
- Short circuit to voltage
- wiring damage
Initial recommendation
Inspect wiring harness to DM-TL pump and repair as required.
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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