AutoCodes – GMC – P0054 GMC

P0054 GMC Code - HO2S Heater Resistance Bank 1 Sensor 2

Quick Answer

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 1 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: P0054 GMC indicates HO2S Heater Resistance Bank 1 Sensor 2.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted, Heated Oxygen Sensor Bank 1 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 13,788

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 Mar 23, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0054 GMC Description

Heated Oxygen Sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach an operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensors to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, the ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the Engine Control Module (ECM). The ECM uses Pulse Width Modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S operating temperature range.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects the HO2S heater is not within a specified resistance range at engine start-up.

OBDII Code P0054 GMC - HO2S Heater Resistance Bank 1 Sensor 2 - AutoCodes.com — P0054 GMC Code - HO2S Heater Resistance Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0054 GMC?

Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
Heated Oxygen Sensor Bank 1 Sensor 2 harness is open shorted
Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
Heated Oxygen Sensor Bank 1 Sensor 2 fuse
Faulty Engine Control Module (ECM)

How to Fix the DTC P0054 GMC?

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

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it takes the sensor to warm up and start sending an adequate signal. The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0054 GMC 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 P0054 GMC code?

Need more information on how to fix the P0054 GMC code? Get Access to Factory Service Manuals

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Information for Specific GMC Models

P0054 2014 GMC Sierra — HO2S Heater Resistance Bank 1 Sensor 2
P0054 2015 GMC Sierra — HO2S Heater Resistance Bank 1 Sensor 2
P0054 2016 GMC Sierra — HO2S Heater Resistance Bank 1 Sensor 2
P0054 2017 GMC Sierra — HO2S Heater Resistance Bank 1 Sensor 2
P0054 2018 GMC Sierra — HO2S Heater Resistance Bank 1 Sensor 2

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 P0054 GMC Code

1. What are the common symptoms of OBDII code P0054 for a GMC vehicle?

The common symptoms of P0054 may include poor fuel economy, rough idling, engine misfires, and an illuminated check engine light.

2. What does the OBDII code P0054 for a GMC indicate?

Code P0054 indicates a malfunction in the heater circuit of the oxygen sensor (HO2S) located in Bank 1 Sensor 2 of the vehicle.

3. What are the possible causes of OBDII code P0054 in a GMC?

Possible causes of P0054 include a faulty oxygen sensor, damaged wiring or connectors in the oxygen sensor circuit, or a blown fuse related to the sensor heater.

4. How can I diagnose the OBDII code P0054 for a GMC?

Diagnosing P0054 involves using a scan tool to retrieve the code, checking the wiring and connectors of the Bank 1 Sensor 2 oxygen sensor, and testing the sensor's heater resistance.

5. Can I continue driving my GMC with OBDII code P0054?

It is not recommended to drive your GMC with code P0054 unresolved, as it can lead to decreased engine performance and potential damage to the catalytic converter.

6. How can I repair OBDII code P0054 in my GMC?

Repairing P0054 typically involves replacing the Bank 1 Sensor 2 oxygen sensor, repairing any damaged wiring or connectors, and ensuring the heater circuit is functioning properly.

7. Are there any DIY tips for fixing OBDII code P0054 in a GMC?

DIY enthusiasts can attempt to replace the Bank 1 Sensor 2 oxygen sensor themselves by following the vehicle's service manual and using the necessary tools.

8. How long does it take to repair OBDII code P0054 in a GMC?

The repair time for P0054 can vary depending on the skill level of the person performing the repair, but it typically takes around 1-2 hours to complete.

9. Can a faulty oxygen sensor cause other OBDII codes to appear along with P0054?

Yes, a faulty oxygen sensor can lead to other related codes appearing in addition to P0054, such as lean or rich mixture codes or catalytic converter efficiency codes.

10. Will resetting the check engine light resolve OBDII code P0054 in a GMC?

Simply resetting the check engine light will not resolve P0054, as the underlying issue causing the code needs to be diagnosed and repaired to prevent it from reoccurring.