AutoCodes – Chevrolet – P2272 2014 Chevrolet Silverado

P2272 2014 Chevrolet Silverado Code - HO2S Signal Stuck Lean 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: P2272 2014 Chevrolet Silverado indicates HO2S Signal Stuck Lean 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 407

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 P2272 2014 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 does not detect an HO2S voltage greater than 800 mV before accumulated mass airflow exceeds a calibrated value.

OBDII Code P2272 2014 Chevrolet Silverado - HO2S Signal Stuck Lean Bank 2 Sensor 2 - AutoCodes.com — P2272 2014 Chevrolet Silverado Code - HO2S Signal Stuck Lean Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P2272 2014 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 P2272 2014 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 P2272 2014 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.

Need more information about the P2272 2014 Chevrolet Silverado code?

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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 P2272 2014 Chevrolet Silverado Code

1. What does OBDII code P2272 on a 2014 Chevrolet Silverado mean?

This code indicates a problem with the HO2S (heated oxygen sensor) signal stuck lean for Bank 2 Sensor 2.

2. What are common symptoms of OBDII code P2272 on a 2014 Chevrolet Silverado?

Common symptoms include poor fuel economy, rough idling, hesitation during acceleration, and the illumination of the check engine light.

3. What are possible causes of OBDII code P2272 on a 2014 Chevrolet Silverado?

Potential causes include a faulty oxygen sensor, exhaust leaks, vacuum leaks, fuel system issues, or a problem with the engine's air intake system.

4. How can I diagnose OBDII code P2272 on a 2014 Chevrolet Silverado?

To diagnose this code, you can use an OBDII scanner to read the code, inspect the oxygen sensor, check for leaks in the exhaust system, and perform a thorough inspection of the fuel and air intake systems.

5. Can I drive with OBDII code P2272 on a 2014 Chevrolet Silverado?

It is not recommended to drive with this code present, as it can lead to decreased fuel efficiency and potential engine damage if left unresolved.

6. How can I repair OBDII code P2272 on a 2014 Chevrolet Silverado?

Repair options may include replacing the oxygen sensor, repairing any leaks in the exhaust system, fixing vacuum leaks, addressing fuel system issues, or cleaning/replacing the air intake components.

7. Will OBDII code P2272 on a 2014 Chevrolet Silverado cause emissions issues?

Yes, this code can lead to increased emissions due to improper air-fuel mixture, so it's essential to address the underlying issue promptly to ensure compliance with emissions regulations.

8. Can a DIY enthusiast fix OBDII code P2272 on a 2014 Chevrolet Silverado?

Depending on the cause, some DIY enthusiasts with automotive repair experience may be able to address this code by replacing the oxygen sensor or fixing minor leaks. However, complex issues may require professional assistance.

9. How long does it typically take to repair OBDII code P2272 on a 2014 Chevrolet Silverado?

The repair time can vary based on the specific cause of the code and the complexity of the repair. Simple fixes like replacing an oxygen sensor may take a couple of hours, while more involved repairs could take longer.

10. Is it necessary to reset the OBDII code P2272 on a 2014 Chevrolet Silverado after making repairs?

Yes, it is important to reset the code using an OBDII scanner after completing repairs to clear the fault code from the vehicle's system and ensure that the issue has been resolved successfully.