P2273
O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 2
P2273 is an OBD-II diagnostic trouble code meaning: O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 2. Common causes: bank 2 oxygen sensor malfunction, fuel leak in injectors. Estimated repair cost: $33–89.
Symptoms
- Increased fuel consumption
- Reduced engine power
- Smell of gasoline from the exhaust pipe
- Black smoke from the exhaust pipe
- Unstable engine operation
Causes
- Bank 2 oxygen sensor malfunction
- Fuel leak in injectors
- Increased pressure in the fuel rail
- Problems with the EVAP system
- Sensor contamination with oil or antifreeze
How to Fix
- Check the condition of the bank 2 oxygen sensor
- Diagnose fuel injectors for leaks
- Check the pressure in the fuel system
- Check the EVAP system for leaks
- Replace the oxygen sensor if necessary
Related codes
Error P2273 by Vehicle Brand
FAQ
What does the P2273 code mean?
P2273 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 2
What causes a P2273 error code?
The most common causes of P2273 include: Bank 2 oxygen sensor malfunction; Fuel leak in injectors; Increased pressure in the fuel rail; Problems with the EVAP system.
How do I fix a P2273 diagnostic trouble code?
To fix P2273: Check the condition of the bank 2 oxygen sensor. Diagnose fuel injectors for leaks. Check the pressure in the fuel system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2273?
Yes, but get it checked soon
How much does it cost to fix P2273?
The estimated repair cost for P2273 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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