What does code P1623 mean on BMW vehicles?
The ECU detects a fault in the reference voltage supply to the accelerator pedal position sensor potentiometer.
OBD-II Code BMW
P1623 — BMW — Pedal Position Sensor Potentiometer Supply
The ECU detects a fault in the reference voltage supply to the accelerator pedal position sensor potentiometer.
Common symptoms
- Emergency mode activation
Possible causes
- Reference voltage supply issue
- wiring fault
Initial recommendation
Check 5V reference supply and pedal sensor wiring.
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
Use the app to combine BMW code P1623 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands