What does code P1406 mean on Toyota vehicles?
The turbo boost pressure sensor reports values outside the expected range compared to engine operating conditions.
OBD-II Code Toyota
P1406 — Toyota — Turbo Pressure Sensor Range/Performance Problem
The turbo boost pressure sensor reports values outside the expected range compared to engine operating conditions.
Common symptoms
- Underboost or overboost conditions
- reduced power
- unstable acceleration
Possible causes
- Boost pressure sensor drift
- sensor contamination
- incorrect sensor readings
- vacuum or pressure line issues
Initial recommendation
Compare boost readings with specifications, inspect pressure lines, 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.
Analyze this code with MecaOBD
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