Engine-CodesGMC – P0137 2017 GMC Sierra

P0137 2017 GMC Sierra Code - HO2S Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The P0137 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to an issue with the HO2S (Heated Oxygen Sensor) Circuit Low Voltage for Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Vacuum leak. 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
P0137 2017 GMC Sierra indicates HO2S Circuit Low Voltage Bank 1 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Vacuum leak.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0137 2017 GMC Sierra Description

The P0137 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to an issue with the HO2S (Heated Oxygen Sensor) Circuit Low Voltage for Bank 1 Sensor 2. This sensor is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. The data collected by this sensor is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency.

OBDII Code P0137 2017 GMC Sierra - HO2S Circuit Low Voltage Bank 1 Sensor 2
P0137 2017 GMC Sierra Code - HO2S Circuit Low Voltage Bank 1 Sensor 2

Common Causes of P0137 2017 GMC Sierra

  1. Faulty oxygen sensor
  2. Damaged wiring or connectors
  3. Vacuum leak
  4. Exhaust leaks
  5. ECM issues

Symptoms of P0137 2017 GMC Sierra

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or lack of power during acceleration
  4. Illuminated check engine light
  5. Increased emissions

How to Fix P0137 2017 GMC Sierra

  1. Begin by using a scan tool to confirm the P0137 code and identify the specific sensor causing the issue.
  2. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as needed.
  3. Check for vacuum leaks or exhaust leaks that could be affecting the sensor's readings.
  4. Test the oxygen sensor's voltage output and replace if it is found to be faulty.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0137 2017 GMC Sierra

The typical repair costs for addressing a P0137 code on a 2017 GMC Sierra can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

Tech Notes for P0137 2017 GMC Sierra

Replacing the Rear Heated Oxygen Sensor (HO2S) Bank 1 usually takes care of the problem.











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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.

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