What does code P1174 mean on BMW vehicles?
A malfunction is detected in the additive fuel trim adaptation process on bank 1.
OBD-II Code BMW
P1174 — BMW — Fuel Trim Adaptation Additive Bank 1 Malfunction
A malfunction is detected in the additive fuel trim adaptation process on bank 1.
Common symptoms
- Check engine light on
Possible causes
- Fuel trim adaptation error
- underlying air or fuel imbalance
Initial recommendation
Reset fuel trim adaptations and diagnose underlying causes.
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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