garajizOBD-II code · manufacturer-specific
P1133
Upstream Heated O2 Sensors Swapped
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does P1133 mean?
P1133 is defined as “Upstream Heated O2 Sensors Swapped”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Lexus: Air/Fuel Ratio Sensor Circuit Response Malfunction Bank 1 Sensor 1
- Toyota: Air/Fuel Sensor Circuit Response Bank 1 Sensor 1
- Ford, Lincoln, Mazda, Mercury: Bank 1 Fuel Control Shifted Lean
- Buick, Cadillac, Chevrolet, Chrysler, GM, GMC, Oldsmobile, Saturn: HO2S Insufficient Switching
- Citroen, Diğer, Peugeot: HO2S Insufficient Switching Sensor 1
- BMW: O2 Sensor Heater Control Circuit Bank 2 Sensor 1
- Volkswagen: Oxygen Sensor Heating Circuit Bank 1 + 2 Sensor 1 Electrical Malfunction
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This page is general information; an exact diagnosis needs measurements and a technician’s check.