AutoCodes – GMC – P0152 2016 GMC Sierra

P0152 2016 GMC Sierra 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 2016 GMC Sierra 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 190

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 2016 GMC Sierra 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 2016 GMC Sierra - HO2S Circuit High Voltage Bank 2 Sensor 1 - AutoCodes.com — P0152 2016 GMC Sierra Code - HO2S Circuit High Voltage Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0152 2016 GMC Sierra?

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 2016 GMC Sierra?

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 2016 GMC Sierra 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 P0152 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P0152 on a 2016 GMC Sierra?

- Common symptoms of code P0152 include poor fuel economy, rough idling, engine hesitation, and the illumination of the Check Engine light.

2. What does the OBDII code P0152 "HO2S Circuit High Voltage Bank 2 Sensor 1" mean for a 2016 GMC Sierra?

- This code indicates that there is a high voltage condition in the oxygen sensor (HO2S) circuit of bank 2, sensor 1 in the exhaust system of the vehicle.

3. What are the possible causes of OBDII code P0152 on a 2016 GMC Sierra?

- The potential causes of code P0152 include a faulty oxygen sensor, wiring issues in the sensor circuit, exhaust leaks, engine misfires, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P0152 on my 2016 GMC Sierra?

- Diagnosing code P0152 involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and testing the sensor's voltage output.

5. Can I still drive my 2016 GMC Sierra with OBDII code P0152?

- It is generally safe to drive the vehicle with code P0152, but it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

6. How can I repair OBDII code P0152 on a 2016 GMC Sierra?

- Repairing code P0152 may involve replacing the oxygen sensor (bank 2, sensor 1), repairing or replacing damaged wiring in the sensor circuit, fixing any exhaust leaks, addressing engine misfires, or reprogramming the ECM.

7. Is it possible to reset OBDII code P0152 on a 2016 GMC Sierra without fixing the issue?

- While you can clear the code with an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as the Check Engine light will likely reappear once the issue persists.

8. How much does it cost to fix OBDII code P0152 on a 2016 GMC Sierra?

- The cost of fixing code P0152 can vary depending on the specific cause of the issue, but it may range from $100 to $300 for a DIY repair or up to $500 to $800 at a professional auto repair shop.

9. Can a faulty oxygen sensor cause OBDII code P0152 on a 2016 GMC Sierra?

- Yes, a faulty oxygen sensor in bank 2, sensor 1 can trigger code P0152, as it may send erroneous high voltage readings to the ECM, indicating a problem in the HO2S circuit.

10. How long does it take to repair OBDII code P0152 on a 2016 GMC Sierra?

- The repair time for code P0152 can vary based on the cause of the issue and your experience level. It may take anywhere from 30 minutes for a straightforward sensor replacement to a few hours for more complex diagnostics and repairs.