What does code P1121 mean on Toyota vehicles?
The APP sensor signal is outside the expected range or performance limits.
OBD-II Code Toyota
P1121 — Toyota — Accelerator Pedal Position Sensor Range/Performance Problem
The APP sensor signal is outside the expected range or performance limits.
Common symptoms
- Hesitation
- limp mode
Possible causes
- APP sensor miscalibration
- internal sensor fault
Initial recommendation
Check APP calibration and replace sensor 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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