AutoCodes – GMC – P0132 2016 GMC Sierra

P0132 2016 GMC Sierra Code - HO2S Circuit High Voltage Bank 1 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 (HO2S) Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 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: P0132 2016 GMC Sierra indicates HO2S Circuit High Voltage Bank 1 Sensor 1.
Common causes: Common causes include Faulty Front Heated Oxygen Sensor (HO2S) Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 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 184

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 26, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0132 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 P0132 2016 GMC Sierra - HO2S Circuit High Voltage Bank 1 Sensor 1 - AutoCodes.com — P0132 2016 GMC Sierra Code - HO2S Circuit High Voltage Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0132 2016 GMC Sierra?

Faulty Front Heated Oxygen Sensor (HO2S) Bank 1
Front Heated Oxygen Sensor Bank 1 harness is open or shorted
Front Heated Oxygen Sensor Bank 1 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 P0132 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 1 usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0132 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 P0132 2016 GMC Sierra Code

1. What does the OBDII code P0132 for a 2016 GMC Sierra mean?

The code P0132 indicates a fault in the HO2S (Heated Oxygen Sensor) Circuit High Voltage Bank 1 Sensor 1 of a 2016 GMC Sierra.

2. What are the common symptoms of OBDII code P0132 in a 2016 GMC Sierra?

Common symptoms of P0132 may include poor fuel economy, rough idling, hesitation or stalling, and an illuminated check engine light.

3. What are the possible causes of the HO2S Circuit High Voltage Bank 1 Sensor 1 code on a 2016 GMC Sierra?

Common causes of P0132 include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine's fuel system.

4. How do I diagnose the OBDII code P0132 on a 2016 GMC Sierra?

Diagnosing P0132 typically involves using a scan tool to read the code, checking the oxygen sensor's voltage, inspecting wiring for damage, and testing the sensor's heater circuit.

5. Can I continue to drive my 2016 GMC Sierra with the P0132 trouble code?

It is generally not recommended to drive with the P0132 code illuminated, as it can lead to reduced fuel efficiency and potential damage to the catalytic converter.

6. How can I repair the HO2S Circuit High Voltage Bank 1 Sensor 1 issue on my 2016 GMC Sierra?

Repairing P0132 may involve replacing the faulty oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing issues with the fuel system.

7. Is it possible to reset the OBDII code P0132 on a 2016 GMC Sierra without fixing the underlying issue?

While you can clear the code with a scan tool, it will likely return if the root cause of the problem, such as a faulty sensor, is not addressed.

8. How much does it cost to fix the HO2S Circuit High Voltage Bank 1 Sensor 1 problem on a 2016 GMC Sierra?

The cost of fixing P0132 can vary depending on the specific issue, but it may involve expenses for parts and labor, with sensor replacement typically being one of the more common and affordable solutions.

9. Are there any preventive maintenance measures to avoid the OBDII code P0132 on a 2016 GMC Sierra?

Regularly servicing your vehicle, checking for exhaust leaks, ensuring proper fuel system maintenance, and using high-quality fuel can help prevent issues that may trigger the P0132 code.

10. Can a DIY enthusiast repair the HO2S Circuit High Voltage Bank 1 Sensor 1 issue on a 2016 GMC Sierra?

While some experienced DIYers may be able to tackle the repair themselves, dealing with oxygen sensors and related systems can be complex, so it's often best to consult a professional mechanic for accurate diagnosis and repair.