What does code P1183 mean on BMW vehicles?
The ECU detects an open circuit in the post-catalyst oxygen sensor (Bank 2 Sensor 2) during deceleration fuel cut-off operation.
OBD-II Code BMW
P1183 — BMW — O2 Sensor (Bank 2 Sensor 2) Open Circuit During Coast Down Fuel Cut-off
The ECU detects an open circuit in the post-catalyst oxygen sensor (Bank 2 Sensor 2) during deceleration fuel cut-off operation.
Common symptoms
- Reduced catalytic converter efficiency
- possible check engine light
Possible causes
- Faulty wiring
- damaged sensor
- connector issues
Initial recommendation
Inspect wiring and connections of Bank 2 post-catalyst O2 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.
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