P1289 Infiniti Code - Air Fuel Ratio Sensor 1 Circuit Slow Response Bank 2
Quick Answer
The P1289 diagnostic trouble code for Infiniti vehicles indicates an issue with the Air Fuel Ratio Sensor 1 Circuit Slow Response in Bank 2. Common causes include Faulty air fuel ratio sensor, Wiring or connector issues, Exhaust leaks. 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
- P1289 Infiniti indicates Air Fuel Ratio Sensor 1 Circuit Slow Response Bank 2.
- Common causes
- Common causes include Faulty air fuel ratio sensor, Wiring or connector issues, Exhaust leaks.
- 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 P1289 Infiniti Description
The P1289 diagnostic trouble code for Infiniti vehicles indicates an issue with the Air Fuel Ratio Sensor 1 Circuit Slow Response in Bank 2. The air fuel ratio sensor, also known as the oxygen sensor, is responsible for monitoring the oxygen content in the exhaust gases. It provides crucial feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the sensor in Bank 2, which refers to the side of the engine that does not contain cylinder number 1, is not responding quickly enough, it can lead to performance issues and potentially affect the vehicle's emissions output.
Common Causes of P1289 Infiniti
- Faulty air fuel ratio sensor
- Wiring or connector issues
- Exhaust leaks
- Engine vacuum leaks
- ECM malfunction
Symptoms of P1289 Infiniti
- Decreased fuel efficiency
- Rough idling or stalling
- Engine misfires
- Check Engine Light illuminated
- Increased emissions output
How to Fix P1289 Infiniti
- Diagnose the issue by using a scan tool to retrieve the trouble code and inspecting the air fuel ratio sensor and related components.
- Test the sensor's response time and voltage output to determine if it is functioning properly.
- Inspect the wiring harness and connectors for any damage or corrosion, repairing or replacing as needed.
- Check for exhaust leaks and engine vacuum leaks that may be affecting the sensor's operation.
- Clear the trouble code, reset the ECM, and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1289 Infiniti
The typical repair costs for addressing a P1289 code in an Infiniti vehicle can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to consult with local auto repair shops for a more accurate estimate.
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