AutoCodes – Chevrolet – P0137 2018 Chevrolet Silverado

P0137 2018 Chevrolet Silverado Code - HO2S Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear 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: P0137 2018 Chevrolet Silverado indicates HO2S Circuit Low Voltage Bank 1 Sensor 2.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear 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 498

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 P0137 2018 Chevrolet Silverado 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 heated oxygen sensor is shorted to ground if the HO2S voltage is less than 50 mV.

OBDII Code P0137 2018 Chevrolet Silverado - HO2S Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0137 2018 Chevrolet Silverado Code - HO2S Circuit Low Voltage Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0137 2018 Chevrolet Silverado?

Faulty Rear Heated Oxygen Sensor Bank 1
Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
Rear 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 P0137 2018 Chevrolet Silverado?

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

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0137 2018 Chevrolet Silverado 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 P0137 2018 Chevrolet Silverado code?

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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 P0137 2018 Chevrolet Silverado Code

1. What does the OBDII code P0137 for a 2018 Chevrolet Silverado indicate?

- The code P0137 means "HO2S Circuit Low Voltage Bank 1 Sensor 2," indicating a low voltage condition in the oxygen sensor downstream of the catalytic converter.

2. What are the common symptoms of OBDII code P0137 in a 2018 Chevrolet Silverado?

- Common symptoms include poor fuel economy, rough idling, engine misfires, and potentially an illuminated check engine light.

3. What are the possible causes of the P0137 code in a 2018 Chevrolet Silverado?

- Causes may include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, engine misfires, or issues with the catalytic converter.

4. How can I diagnose the P0137 code in my 2018 Chevrolet Silverado?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and related wiring, checking for exhaust leaks, and testing the sensor's voltage output.

5. How can I repair the P0137 code in my 2018 Chevrolet Silverado?

- Repair options may include replacing the oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, addressing engine misfires, or replacing the catalytic converter if necessary.

6. Can I drive my 2018 Chevrolet Silverado with the P0137 code present?

- It is not advisable to drive with the P0137 code present, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

7. How much does it typically cost to repair the P0137 code in a 2018 Chevrolet Silverado?

- The cost of repairing the P0137 code can vary depending on the specific cause, but it may range from $100 to $500 or more, including parts and labor.

8. Will resetting the check engine light clear the P0137 code in my 2018 Chevrolet Silverado?

- Resetting the check engine light may temporarily clear the code, but it will return if the underlying issue causing the P0137 code is not addressed.

9. How can I prevent the P0137 code from reoccurring in my 2018 Chevrolet Silverado?

- To prevent the P0137 code from reoccurring, it's essential to address any underlying issues promptly, perform regular maintenance, and ensure the vehicle's engine is running smoothly.

10. Can a DIY enthusiast repair the P0137 code in a 2018 Chevrolet Silverado?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to repair the P0137 code by following repair guides and using appropriate diagnostic equipment.