AutoCodes – Infiniti – P0052 2005 Infiniti G35

P0052 2005 Infiniti G35 Code - Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High

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: P0052 2005 Infiniti G35 indicates Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High.
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.

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Code Popularity 4,797

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 01, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0052 2005 Infiniti G35 Description

Air-Fuel Ratio (A/F)sensor need to reach a minimum operating temperature of 1200 degrees F to produce an accurate voltage signal. The faster the air-fuel ratio sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
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.

OBDII Code P0052 2005 Infiniti G35 - Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High - AutoCodes.com — P0052 2005 Infiniti G35 Code - Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P0052 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
Faulty Engine Control Module (ECM)

How to Fix the DTC P0052 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.

What does this mean?

Code Tech Notes

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0052 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0052 2005 Infiniti G35 Code

1. What does OBDII code P0052 mean for a 2005 Infiniti G35?

Code P0052 indicates a fault in the Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit, specifically a high circuit voltage.

2. What are common symptoms of OBDII code P0052 in a 2005 Infiniti G35?

Common symptoms of P0052 may include poor fuel economy, engine misfires, rough idling, and an illuminated check engine light.

3. What are possible causes of OBDII code P0052 in a 2005 Infiniti G35?

Possible causes of P0052 include a faulty air fuel ratio sensor, damaged wiring or connectors, a blown fuse, or an issue with the engine control module.

4. How can I diagnose OBDII code P0052 in my 2005 Infiniti G35?

Diagnosing P0052 typically involves checking the sensor's wiring and connectors for damage, testing the sensor's resistance, and inspecting related fuses and the engine control module.

5. How can I repair OBDII code P0052 in my 2005 Infiniti G35?

Repairing P0052 may involve replacing the Air Fuel Ratio Sensor 1 Heater Bank 2, repairing damaged wiring or connectors, and ensuring all related components are functioning properly.

6. Can I continue driving my 2005 Infiniti G35 with OBDII code P0052?

It is not recommended to drive your vehicle with code P0052 present, as it can lead to poor engine performance and potential damage over time. It is best to address the issue promptly.

7. Will resetting the check engine light fix OBDII code P0052 in my 2005 Infiniti G35?

Simply resetting the check engine light will not fix the underlying issue causing P0052. It is important to diagnose and repair the root cause of the problem.

8. How much does it typically cost to repair OBDII code P0052 in a 2005 Infiniti G35?

The cost of repairing P0052 can vary depending on the cause of the issue, parts needed, and labor costs. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P0052 in a 2005 Infiniti G35?

While some enthusiasts may be able to diagnose and repair P0052 themselves, it is a complex issue that may require specialized tools and knowledge. It is advisable to seek professional help if needed.

10. How often does OBDII code P0052 occur in a 2005 Infiniti G35?

The occurrence of P0052 can vary depending on the vehicle's condition and maintenance history. Regular vehicle inspections and prompt attention to check engine lights can help prevent this code from occurring frequently.