What does code P1100 mean on Toyota vehicles?
The ECU detects a malfunction in the barometric pressure (BARO) sensor circuit used to calculate air density.
OBD-II Code Toyota
P1100 — Toyota — BARO Sensor Circuit
The ECU detects a malfunction in the barometric pressure (BARO) sensor circuit used to calculate air density.
Common symptoms
- Check engine light
- performance issues
Possible causes
- Faulty BARO sensor
- wiring issue
Initial recommendation
Check BARO sensor signal and inspect 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.
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