What does code P1400 mean on Lexus vehicles?
A malfunction has been detected in the secondary throttle position (Sub-TP) sensor circuit.
OBD-II Code Lexus
P1400 — Lexus — Sub-Throttle Position Sensor Malfunction
A malfunction has been detected in the secondary throttle position (Sub-TP) sensor circuit.
Common symptoms
- Limp mode activation
- reduced throttle response
Possible causes
- Faulty secondary TP sensor
- wiring issues
Initial recommendation
Inspect secondary throttle position sensors and related 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 Lexus code P1400 with your vehicle's actual symptoms for more complete diagnostic guidance.
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