P2274
O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 3
P2274 is an OBD-II diagnostic trouble code meaning: O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 3. Common causes: oxygen sensor malfunction, air leaks in the intake tract. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- Reduced engine power
- Unstable engine operation at idle
Causes
- Oxygen sensor malfunction
- Air leaks in the intake tract
- Contaminated or damaged catalytic converter
- Problems with the fuel pump or injectors
- Open or short circuit in the sensor circuit
How to Fix
- Check the condition and connections of the oxygen sensor
- Diagnose possible air leaks in the system
- Check the catalytic converter for blockage
- Test the fuel system for correct pressure
- Check the sensor circuit for open circuit and resistance
Related codes
Error P2274 by Vehicle Brand
FAQ
What does the P2274 code mean?
P2274 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 3
What causes a P2274 error code?
The most common causes of P2274 include: Oxygen sensor malfunction; Air leaks in the intake tract; Contaminated or damaged catalytic converter; Problems with the fuel pump or injectors.
How do I fix a P2274 diagnostic trouble code?
To fix P2274: Check the condition and connections of the oxygen sensor. Diagnose possible air leaks in the system. Check the catalytic converter for blockage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2274?
Yes, but get it checked soon
How much does it cost to fix P2274?
The estimated repair cost for P2274 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat