AutoCodes – Chevrolet – P0152 2014 Chevrolet Silverado

P0152 2014 Chevrolet Silverado Code - HO2S Circuit High Voltage Bank 2 Sensor 1

Quick Answer

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 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: P0152 2014 Chevrolet Silverado indicates HO2S Circuit High Voltage Bank 2 Sensor 1.
Common causes: Common causes include Faulty Front Heated Oxygen Sensor Bank 2, Front Heated Oxygen Sensor Bank 2 harness is open or shorted, Front Heated Oxygen Sensor Bank 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 673

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 27, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0152 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 detects that the HO2S voltage is greater than 1, 050 mV.

OBDII Code P0152 2014 Chevrolet Silverado - HO2S Circuit High Voltage Bank 2 Sensor 1 - AutoCodes.com — P0152 2014 Chevrolet Silverado Code - HO2S Circuit High Voltage Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0152 2014 Chevrolet Silverado?

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 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 P0152 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 Front Heated Oxygen Sensor (HO2S) Bank 2 usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0152 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 P0152 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 P0152 2014 Chevrolet Silverado Code

What does the OBDII code P0152 mean for a 2014 Chevrolet Silverado?

P0152 indicates that the oxygen sensor (HO2S) in Bank 2 Sensor 1 is reporting a high voltage, suggesting the air-fuel mixture is too rich.

What are common symptoms of code P0152 on a 2014 Chevrolet Silverado?

Symptoms may include reduced fuel efficiency, rough idling, poor engine performance, increased exhaust emissions, or the Check Engine Light turning on.

What causes code P0152 on a 2014 Chevrolet Silverado?

Common causes include a faulty Bank 2 Sensor 1 oxygen sensor, fuel system issues (like a leaky injector), damaged wiring, or a malfunctioning PCM.

How do you fix code P0152 on a 2014 Chevrolet Silverado?

Repairs may involve replacing the oxygen sensor, repairing damaged wiring or connectors, addressing fuel system issues, or reprogramming/replacing the PCM if necessary.

Can a dirty air filter cause code P0152 on a 2014 Chevrolet Silverado?

A dirty air filter is unlikely to directly cause P0152, but restricted airflow can affect the air-fuel mixture and contribute to related issues.

Is it safe to drive with code P0152 on a 2014 Chevrolet Silverado?

While the vehicle may remain driveable, ignoring P0152 can lead to decreased performance, lower fuel efficiency, and potential damage to the catalytic converter.

How do you locate Bank 2 Sensor 1 on a 2014 Chevrolet Silverado?

Bank 2 refers to the side of the engine opposite Bank 1 (usually the side without cylinder #1), and Sensor 1 is the upstream oxygen sensor located before the catalytic converter.

Can a bad PCM cause code P0152 on a 2014 Chevrolet Silverado?

Although rare, a malfunctioning PCM can sometimes cause incorrect sensor readings or fail to regulate the air-fuel mixture properly.

How can you test the oxygen sensor for code P0152 on a 2014 Chevrolet Silverado?

You can use a multimeter or scan tool to check the voltage output of the sensor while the engine is running to determine if itâ€™s functioning properly.

What is the cost to repair code P0152 on a 2014 Chevrolet Silverado?

Repair costs vary depending on the cause, but replacing an oxygen sensor typically costs $150-$300, while wiring repairs or PCM replacement may cost more.