AutoCodes – Chevrolet – P014B Chevrolet

P014B Chevrolet Code - HO2S Delayed Response Lean to Rich Bank 2 Sensor 2

Quick Answer

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Heated Oxygen Bank 2 Sensor 2, Heated Oxygen Bank 2 Sensor 2 harness is open or shorted, Heated Oxygen Bank 2 Sensor 2 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: P014B Chevrolet indicates HO2S Delayed Response Lean to Rich Bank 2 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Bank 2 Sensor 2, Heated Oxygen Bank 2 Sensor 2 harness is open or shorted, Heated Oxygen Bank 2 Sensor 2 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 3,187

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 May 28, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P014B Chevrolet Description

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is started, the Engine Control Module (ECM) operates in an Open Loop mode, ignoring the HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0 - 1, 000 mV. Once sufficient HO2S voltage fluctuation is observed by the ECM, Closed Loop is entered. The ECM uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1, 000 mV indicates a rich fuel mixture. An HO2S voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed Loop earlier and the ECM to calculate the air-to-fuel ratio sooner.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the O2 sensor voltage has not increased above 350 mV within a calibrated value of accumulated airflow.

OBDII Code P014B Chevrolet - HO2S Delayed Response Lean to Rich Bank 2 Sensor 2 - AutoCodes.com — P014B Chevrolet Code - HO2S Delayed Response Lean to Rich Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P014B Chevrolet?

Faulty Heated Oxygen Bank 2 Sensor 2
Heated Oxygen Bank 2 Sensor 2 harness is open or shorted
Heated Oxygen Bank 2 Sensor 2 circuit poor electrical connection
Low or high fuel system pressure
Fuel contamination
Faulty fuel injectors
Exhaust gas leaks
Engine vacuum leaks

How to Fix the DTC P014B Chevrolet?

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 Rear Heated Oxygen Sensors (HO2S) usually takes care of the problem.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P014B Chevrolet 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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Information for Specific Chevrolet Models

P014B 2014 Chevrolet Silverado — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
P014B 2015 Chevrolet Silverado — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
P014B 2016 Chevrolet Silverado — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
P014B 2017 Chevrolet Silverado — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2
P014B 2018 Chevrolet Silverado — HO2S Delayed Response Lean to Rich Bank 2 Sensor 2

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 P014B Chevrolet Code

1. What are the common symptoms of OBDII code P014B Chevrolet?

The common symptoms of code P014B Chevrolet include a decrease in fuel efficiency, rough idling, and a noticeable drop in engine performance.

2. What does the OBDII code P014B Chevrolet indicate?

The code P014B Chevrolet indicates a delayed response from the downstream oxygen sensor (Bank 2 Sensor 2) as it transitions from a lean to a rich air/fuel mixture.

3. What are the possible causes of OBDII code P014B Chevrolet?

Possible causes of code P014B Chevrolet include a faulty oxygen sensor, a vacuum leak in the exhaust system, issues with the fuel system, or a malfunctioning catalytic converter.

4. How can I diagnose the OBDII code P014B Chevrolet?

Diagnosing code P014B Chevrolet involves using an OBDII scanner to read the code and inspecting the downstream oxygen sensor (Bank 2 Sensor 2) and related components for any signs of damage or malfunction.

5. How can I repair OBDII code P014B Chevrolet?

To repair code P014B Chevrolet, you may need to replace the downstream oxygen sensor (Bank 2 Sensor 2), repair any exhaust leaks, check and clean the fuel injectors, or replace the catalytic converter if necessary.

6. Can driving with OBDII code P014B Chevrolet cause further damage to the vehicle?

Continued driving with code P014B Chevrolet can potentially cause damage to the catalytic converter and other engine components over time, leading to more costly repairs.

7. How urgent is it to address OBDII code P014B Chevrolet?

While the vehicle may still be operable with code P014B Chevrolet, it is recommended to address the issue promptly to prevent further damage to the engine and emissions system.

8. Can I reset the OBDII code P014B Chevrolet without making repairs?

Resetting the code without addressing the underlying issue is not recommended, as the problem will likely reoccur, and potential damage to the vehicle may worsen over time.

9. Is it possible to prevent OBDII code P014B Chevrolet from occurring?

Regular maintenance of the oxygen sensors, fuel system, and exhaust system can help prevent code P014B Chevrolet from occurring. Additionally, driving responsibly and avoiding harsh driving conditions can also help prevent this issue.

10. How much does it typically cost to repair OBDII code P014B Chevrolet?

The cost of repairing code P014B Chevrolet can vary depending on the specific issue causing the code, the labor rates in your area, and the cost of parts. It is recommended to consult with a qualified mechanic for an accurate estimate.