AutoCodes – Chevrolet – P014B 2017 Chevrolet Silverado

P014B 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 310

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado - HO2S Delayed Response Lean to Rich Bank 2 Sensor 2 - AutoCodes.com — P014B 2017 Chevrolet Silverado Code - HO2S Delayed Response Lean to Rich Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P014B 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 P014B 2017 Chevrolet Silverado Code

1. What does the OBDII code P014B mean on a 2017 Chevrolet Silverado?

P014B stands for "HO2S Delayed Response Lean to Rich Bank 2 Sensor 2," indicating the downstream oxygen sensor on Bank 2 is not switching between lean and rich conditions as quickly as expected.

2. What are the symptoms of code P014B in a 2017 Chevrolet Silverado?

Common symptoms include the check engine light turning on, decreased fuel efficiency, rough idling, or a potential increase in emissions output.

3. What causes the P014B code on a 2017 Chevrolet Silverado?

The code can be triggered by a faulty Bank 2, Sensor 2 oxygen sensor, exhaust leaks, wiring or connector issues, or an issue with the engine running too lean or rich.

4. Can a dirty oxygen sensor cause the P014B code?

Yes, a dirty or contaminated oxygen sensor can slow its response time, leading to this code.

5. How do I diagnose the P014B code on my Silverado?

Diagnose by inspecting the oxygen sensor and its wiring, checking for exhaust leaks, and monitoring live O2 sensor data with a scan tool to confirm the slow response.

6. Is it safe to drive with a P014B code?

While the vehicle may still be drivable, ignoring the code can lead to increased emissions, reduced fuel efficiency, and potential damage to other components like the catalytic converter.

7. How do I fix the P014B code on a 2017 Chevrolet Silverado?

Common fixes include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, addressing exhaust leaks, or resolving engine performance issues.

8. Which oxygen sensor does Bank 2 Sensor 2 refer to?

Bank 2 refers to the side of the engine opposite Cylinder 1, and Sensor 2 is the oxygen sensor located downstream, after the catalytic converter.

9. Can a vacuum leak cause the P014B code?

While a vacuum leak is less likely to directly cause this code, it can contribute to lean conditions that may indirectly affect oxygen sensor performance.

10. How much does it cost to fix the P014B code on a 2017 Chevrolet Silverado?

Repair costs vary, but replacing an oxygen sensor typically costs $150â€“$400, including parts and labor. Additional repairs may increase the total cost.