P1274 Infiniti Code - Air Fuel Ratio Sensor 1 Bank 1 Rich Shift Monitoring
Quick Answer
The P1274 Infiniti code indicates an issue with the Air Fuel Ratio Sensor 1 on Bank 1, specifically related to a rich shift monitoring problem. Common causes include Faulty Air Fuel Ratio Sensor, Vacuum leaks in the intake system, Dirty or clogged fuel injectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1274 Infiniti indicates Air Fuel Ratio Sensor 1 Bank 1 Rich Shift Monitoring .
- Common causes
- Common causes include Faulty Air Fuel Ratio Sensor, Vacuum leaks in the intake system, Dirty or clogged fuel injectors.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1274 Infiniti Description
The P1274 Infiniti code indicates an issue with the Air Fuel Ratio Sensor 1 on Bank 1, specifically related to a rich shift monitoring problem. This sensor is responsible for measuring the amount of oxygen in the exhaust gases and sending this data to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the sensor detects a rich air-fuel mixture, it triggers this code.
Common Causes of P1274 Infiniti
- Faulty Air Fuel Ratio Sensor
- Vacuum leaks in the intake system
- Dirty or clogged fuel injectors
- Issues with the fuel pressure regulator
- Faulty ECM or wiring issues
Symptoms of P1274 Infiniti
- Decreased fuel efficiency
- Rough idling or stalling
- Reduced engine performance
- Check Engine Light illuminated
- Black smoke from the exhaust
How to Fix P1274 Infiniti
- Diagnose the issue with a scan tool to confirm the P1274 code.
- Inspect the air fuel ratio sensor and replace if necessary.
- Check for any vacuum leaks in the intake system and repair as needed.
- Clean or replace clogged fuel injectors.
- Test the fuel pressure regulator and replace if faulty.
Cost to Fix P1274 Infiniti
The cost of repairing the P1274 Infiniti code can vary depending on the specific cause of the issue. On average, the cost of replacing an air fuel ratio sensor can range from $150 to $400, including parts and labor. Additional costs may be incurred if other components need to be replaced or if there are wiring issues to address. It's recommended to consult with a professional mechanic to get a more accurate estimate based on the specific circumstances of the vehicle.
Tech Notes for P1274 Infiniti
There is a Factory Service Bulletin for the following Infiniti models:
2003-2012 Infiniti FX
2002 Infiniti G20
2003-2006 Infiniti G35 Sedan
2003-2007 Infiniti G35 Coupe
2006-2012 Infiniti G37 Sedan
2008-2012 Infiniti G37 Coupe
2002-2004 Infiniti I35
2004-2012 Infiniti M
2002-2006 Infiniti Q45
2002-2003 Infiniti QX4
2004-2012 Infiniti QX56
Infiniti Factory Service Bulletin OBDII Code P1274
When is the Code Detected?
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