P2277
O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3
P2277 is an OBD-II diagnostic trouble code meaning: O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3. Common causes: oxygen sensor malfunction (bank 2 sensor 3), exhaust gas leak in front of the sensor. Estimated repair cost: $28–89.
Symptoms
- Increased fuel consumption
- Unstable engine idling
- Reduced engine power
- Check Engine Light Is On
- Dips during acceleration
Causes
- Oxygen sensor malfunction (Bank 2 Sensor 3)
- Exhaust gas leak in front of the sensor
- Malfunction of the catalytic converter
- Problems with the fuel system (re-rich mixture)
- Damaged or oxidized sensor wiring harness contacts
How to Fix
- Check the status of the oxygen sensor Bank 2 Sensor 3
- Inspect the exhaust system for leaks
- Check fuel trim readings
- Check the condition of the catalytic converter
- Replace the faulty oxygen sensor if necessary
Related codes
Error P2277 by Vehicle Brand
FAQ
What does the P2277 code mean?
P2277 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 3
What causes a P2277 error code?
The most common causes of P2277 include: Oxygen sensor malfunction (Bank 2 Sensor 3); Exhaust gas leak in front of the sensor; Malfunction of the catalytic converter; Problems with the fuel system (re-rich mixture).
How do I fix a P2277 diagnostic trouble code?
To fix P2277: Check the status of the oxygen sensor Bank 2 Sensor 3. Inspect the exhaust system for leaks. Check fuel trim readings. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2277?
Yes, but get it checked soon
How much does it cost to fix P2277?
The estimated repair cost for P2277 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat