AutoCodes – Nissan – P014E Nissan

P014E Nissan Code - Air Fuel Ratio Sensor Slow Response - Rich To Lean Bank 2 sensor 1

Quick Answer

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. Common causes include Faulty Air Fuel Ratio (A/F) Bank 2 Sensor 1, Air Fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted, Air Fuel Ratio (A/F) 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: P014E Nissan indicates Air Fuel Ratio Sensor Slow Response - Rich To Lean Bank 2 sensor 1.
Common causes: Common causes include Faulty Air Fuel Ratio (A/F) Bank 2 Sensor 1, Air Fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted, Air Fuel Ratio (A/F) 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 10,085

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 12, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P014E Nissan Description

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element. The sensor is capable of precise measurement λ = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide λ range. The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of approximately 760°C (1,400°F).

OBDII Code P014E Nissan - Air Fuel Ratio Sensor Slow Response - Rich To Lean Bank 2 sensor 1 - AutoCodes.com — P014E Nissan Code - Air Fuel Ratio Sensor Slow Response - Rich To Lean Bank 2 sensor 1

What does this mean?

What are the Possible Causes of the DTC P014E Nissan?

Faulty Air Fuel Ratio (A/F) Bank 2 Sensor 1
Air Fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted
Air Fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection

How to Fix the DTC P014E 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 does this mean?

Code Tech Notes

Replacing the Air Fuel Ratio Bank 2 Sensor 1 usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P014E 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.

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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.