What does code P1123 mean on BMW vehicles?
The accelerator pedal position sensor 1 signal is higher than expected, causing erratic throttle behavior.
OBD-II Code BMW
P1123 — BMW — Pedal Position Sensor 1 High Input
The accelerator pedal position sensor 1 signal is higher than expected, causing erratic throttle behavior.
Common symptoms
- Erratic acceleration
- unstable engine response
Possible causes
- Short circuit
- faulty pedal position sensor
Initial recommendation
Inspect wiring for shorts and verify pedal sensor output.
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
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