P0051 2005 Infiniti G35 Code - Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit Low
Quick Answer
Air-Fuel Ratio (A/F) sensor need to reach a minimum operating temperature of 1200 degrees F to produce an accurate voltage signal. Common causes include Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open shorted to ground, Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0051 2005 Infiniti G35 indicates Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit Low.
- Common causes
- Common causes include Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open shorted to ground, Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0051 2005 Infiniti G35 Description
In order to achieve the require temperature, a heater element is included inside the air-fuel ratio sensor. The ECM controls the air-fuel ratio sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0051 2005 Infiniti G35?
- Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1
- Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open shorted to ground
- Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection
- Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0051 2005 Infiniti G35?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0051 2005 Infiniti G35 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0051 2005 Infiniti G35 Code
1. What are the common symptoms of OBDII code P0051 on a 2005 Infiniti G35?
- Common symptoms include poor fuel economy, rough idling, and a noticeable drop in engine performance.
2. What can cause the OBDII code P0051 on a 2005 Infiniti G35?
- The code P0051 typically indicates a malfunction in the Air Fuel Ratio Sensor 1 Heater Bank 2 control circuit, which could be caused by a faulty sensor, wiring issues, or a blown fuse.
3. How can I diagnose the OBDII code P0051 on my 2005 Infiniti G35?
- Diagnosing the code involves checking the sensor's wiring, connections, and resistance values, as well as inspecting the fuse related to the sensor heater circuit.
4. Can I drive my 2005 Infiniti G35 with the OBDII code P0051?
- It is not recommended to drive the vehicle with the code P0051 present, as it can lead to further damage and potential safety hazards.
5. How do I repair the OBDII code P0051 on a 2005 Infiniti G35?
- Repairing the code typically involves replacing the faulty Air Fuel Ratio Sensor 1 on Bank 2 and addressing any wiring or fuse issues in the sensor heater circuit.
6. Are there any tips to prevent the OBDII code P0051 from recurring on a 2005 Infiniti G35?
- Regular maintenance, such as keeping the sensor and its connections clean, can help prevent the code from recurring. Additionally, addressing any underlying issues promptly can prevent further problems.
7. How much does it cost to fix the OBDII code P0051 on a 2005 Infiniti G35?
- The cost of fixing the code can vary depending on the cause of the issue, but it typically involves the cost of a new Air Fuel Ratio Sensor 1 and any labor charges for the repair.
8. Can I reset the OBDII code P0051 on my 2005 Infiniti G35 without fixing the issue?
- While you can clear the code using an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as the code is likely to reappear.
9. How long does it take to repair the OBDII code P0051 on a 2005 Infiniti G35?
- The repair time can vary based on the extent of the issue and the availability of parts, but it typically takes a few hours to replace the Air Fuel Ratio Sensor 1 and address any related wiring problems.
10. Will the OBDII code P0051 cause my 2005 Infiniti G35 to fail an emissions test?
- Yes, the code P0051 can cause the vehicle to fail an emissions test due to its impact on the air-fuel ratio control system. It is important to address the issue before undergoing emissions testing.
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