What does code P0153 mean?
The oxygen sensor B2S1 responds slowly to mixture changes
OBD-II Code
P0153 — Oxygen Sensor Circuit Slow Response Bank 2 Sensor 1
The oxygen sensor B2S1 responds slowly to mixture changes
Common symptoms
- Increased fuel consumption
- minor hesitation
Possible causes
- Aged sensor
- contamination
- minor exhaust leaks
Initial recommendation
Check for exhaust leaks and replace sensor if response is slow.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0153 with your vehicle's actual symptoms for more complete diagnostic guidance.
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