What does code P1284 mean on BMW vehicles?
The control circuit for the air-assisted injection valve switching solenoid on Bank 1 is reporting a low signal condition.
OBD-II Code BMW
P1284 — BMW — Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Signal Low
The control circuit for the air-assisted injection valve switching solenoid on Bank 1 is reporting a low signal condition.
Common symptoms
- Loss of engine power
Possible causes
- Open circuit
- damaged wiring
- faulty solenoid
Initial recommendation
Check circuit continuity and replace solenoid if necessary.
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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