AutoCodes – GMC – P0053 2018 GMC Sierra

P0053 2018 GMC Sierra Code - HO2S Heater Resistance Bank 1 Sensor 1

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 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 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: P0053 2018 GMC Sierra indicates HO2S Heater Resistance Bank 1 Sensor 1.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor Bank 1 Sensor 1 harness is open shorted, Heated Oxygen Sensor Bank 1 Sensor 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 363

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 25, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0053 2018 GMC Sierra 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 P0053 2018 GMC Sierra - HO2S Heater Resistance Bank 1 Sensor 1 - AutoCodes.com — P0053 2018 GMC Sierra Code - HO2S Heater Resistance Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0053 2018 GMC Sierra?

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

How to Fix the DTC P0053 2018 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

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 P0053 2018 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 P0053 2018 GMC Sierra Code

1. What does the OBDII code P0053 mean on a 2018 GMC Sierra?

P0053 indicates an issue with the HO2S (Heated Oxygen Sensor) Heater Resistance in Bank 1 Sensor 1, meaning the sensor's internal heater circuit is not functioning correctly.

2. What are the common symptoms of code P0053 in a GMC Sierra?

Symptoms may include an illuminated Check Engine Light, poor fuel economy, rough idling, or delayed engine warm-up.

3. What causes the P0053 code to appear on a 2018 GMC Sierra?

Common causes include a faulty oxygen sensor, damaged wiring in the sensor circuit, a blown fuse, or issues with the engine control module (ECM).

4. Which oxygen sensor is affected by code P0053 in a GMC Sierra?

Code P0053 refers to the upstream oxygen sensor (Bank 1 Sensor 1), located before the catalytic converter on the side of the engine with cylinder 1.

5. Can a bad HO2S heater cause drivability issues in a 2018 GMC Sierra?

Yes, a malfunctioning heater can lead to improper oxygen sensor readings, which may affect fuel mixture and engine performance.

6. How do you troubleshoot the P0053 code on a 2018 GMC Sierra?

Start by inspecting the wiring and connectors for the Bank 1 Sensor 1 oxygen sensor, checking for damage or corrosion. Then test the sensor's resistance and heater circuit.

7. Do I need to replace the oxygen sensor to fix the P0053 code?

If the sensor is faulty or its resistance is out of specification, it should be replaced. However, inspect the wiring and fuses first to rule out other issues.

8. How much does it cost to repair the P0053 code on a 2018 GMC Sierra?

The cost can range from $150 to $300, depending on whether only the oxygen sensor needs replacement or additional repairs (e.g., wiring) are required.

9. Can I drive my GMC Sierra with a P0053 code?

While the vehicle may still be driveable, prolonged operation with this code could lead to reduced fuel efficiency and potential damage to the catalytic converter.

10. Will clearing the P0053 code fix the issue permanently?

No, clearing the code will only reset the Check Engine Light temporarily. The underlying issue must be resolved to prevent the code from returning.