AutoCodes – Nissan – P0052 Nissan

P0052 Nissan Code - HO2S21 Heater Control Circuit High

Quick Answer

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection, Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1. 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 Nissan indicates HO2S21 Heater Control Circuit High.
Common causes: Common causes include Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection, Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1.
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 9,200

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 Mar 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0052 Nissan Description

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen 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 heated oxygen sensor. The ECM controls the heated oxygen 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 Nissan - HO2S21 Heater Control Circuit High - AutoCodes.com — P0052 Nissan Code - HO2S21 Heater Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P0052 Nissan?

Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground
Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection
Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1
Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse
Faulty Engine Control Module (ECM)

How to Fix the DTC P0052 Nissan?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0052 Nissan 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.

Need more information about the P0052 Nissan code?

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Information for Specific Nissan Models

P0052 2006 Nissan Maxima — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2007 Nissan Maxima — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2008 Nissan Maxima — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2006 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2007 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2008 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2009 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2010 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2011 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2012 Nissan Pathfinder — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2002 Nissan Sentra — HO2S21 Heater Control Circuit High
P0052 2007 Nissan Sentra — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2008 Nissan Sentra — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2009 Nissan Sentra — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2010 Nissan Sentra — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2011 Nissan Sentra — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High
P0052 2012 Nissan Sentra — Air Fuel Ratio Sensor 1 Heater Bank 2 Control Circuit High

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.