What does code P1133 mean on Toyota vehicles?
The air/fuel ratio sensor response is slower than expected.
OBD-II Code Toyota
P1133 — Toyota — Air/Fuel Ratio Sensor Circuit Response (Bank 1 Sensor 1)
The air/fuel ratio sensor response is slower than expected.
Common symptoms
- Check engine light
- increased emissions
Possible causes
- Aging or contaminated A/F ratio sensor
Initial recommendation
Replace air/fuel ratio sensor.
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 Toyota code P1133 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands