Engine-CodesInfiniti – P0032 Infiniti

P0032 Infiniti Code - Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit High

Quick Answer

The P0032 diagnostic trouble code (DTC) for Infiniti vehicles refers to the Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit High. Common causes include Faulty air fuel ratio sensor, Damaged heater circuit, Wiring issues. 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
P0032 Infiniti indicates Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit High.
Common causes
Common causes include Faulty air fuel ratio sensor, Damaged heater circuit, Wiring issues.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0032 Infiniti Description

The P0032 diagnostic trouble code (DTC) for Infiniti vehicles refers to the Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit High. This code indicates that there is a high voltage condition in the control circuit of the air fuel ratio sensor 1 heater in bank 1. The air fuel ratio sensor, also known as the oxygen sensor, plays a crucial role in monitoring and adjusting the air-fuel mixture in the engine for optimal combustion. The heater circuit in the sensor is responsible for reaching and maintaining the sensor's operating temperature quickly, especially during cold starts, to provide accurate readings to the engine control module (ECM).

OBDII Code P0032 Infiniti - Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit High
P0032 Infiniti Code - Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit High

Common Causes of P0032 Infiniti

  1. Faulty air fuel ratio sensor
  2. Damaged heater circuit
  3. Wiring issues
  4. Malfunctioning ECM
  5. Corrosion or poor connections in the sensor circuit

Symptoms of P0032 Infiniti

  1. Decreased fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Engine misfires
  5. Illuminated check engine light

How to Fix P0032 Infiniti

  1. Diagnose the code using a scan tool to confirm the issue.
  2. Inspect the air fuel ratio sensor and its heater circuit for any damage or corrosion.
  3. Test the wiring and connections in the sensor circuit for continuity and proper voltage.
  4. Replace the air fuel ratio sensor if it is found to be faulty.
  5. Clear the code and reset the ECM to see if the issue is resolved.

Cost to Fix P0032 Infiniti

The typical repair costs for addressing the P0032 code on an Infiniti vehicle can range from $200 to $500, including parts and labor. It's important to note that 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. Auto repair shops commonly charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It is recommended to check local rates for a more accurate estimate.

Tech Notes for P0032 Infiniti

For models before 2005 see: P0032 Infiniti

When is the Code Detected?

The P0032 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit

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Information for Specific Infiniti Models

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.

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