What does code P1133 mean on Lexus vehicles?
The air/fuel ratio sensor on bank 1 sensor 1 responds too slowly to mixture changes.
OBD-II Code Lexus
P1133 — Lexus — Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)
The air/fuel ratio sensor on bank 1 sensor 1 responds too slowly to mixture changes.
Common symptoms
- High fuel consumption
- elevated emissions
Possible causes
- Aged or contaminated A/F sensor
- incorrect fuel mixture
Initial recommendation
Replace air/fuel ratio sensor and verify fuel control operation.
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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