P0137 2018 GMC Sierra Code - HO2S Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The P0137 diagnostic trouble code (DTC) for a 2018 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, Exhaust leaks. 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 GMC Sierra indicates HO2S Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty oxygen sensor, Damaged wiring or connectors, Exhaust leaks.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0137 2018 GMC Sierra Description
The P0137 diagnostic trouble code (DTC) for a 2018 GMC Sierra refers to an issue with the HO2S (Heated Oxygen Sensor) Circuit Low Voltage for Bank 1 Sensor 2. This code indicates that the oxygen sensor located downstream from the catalytic converter on bank 1 is sending a signal that is lower than the expected voltage range. The HO2S is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.
Common Causes of P0137 2018 GMC Sierra
- Faulty oxygen sensor
- Damaged wiring or connectors
- Exhaust leaks
- Issues with the ECM
- Contaminated fuel affecting sensor readings
Symptoms of P0137 2018 GMC Sierra
- Check Engine Light illuminated on the dashboard
- Decreased fuel efficiency
- Rough idling or hesitation during acceleration
- Failed emissions test
- Engine stalling or misfiring
How to Fix P0137 2018 GMC Sierra
- Begin by diagnosing the specific cause of the issue using an OBD-II scanner to confirm the P0137 code.
- Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
- Test the oxygen sensor using a multimeter to ensure it is functioning correctly. Replace if faulty.
- Check for exhaust leaks and repair them to prevent false readings from the oxygen sensor.
- Clear the DTC and reset the ECM to see if the issue has been resolved. Test drive the vehicle to ensure proper functionality.
Cost to Fix P0137 2018 GMC Sierra
The typical repair costs for addressing a P0137 code on a 2018 GMC Sierra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. It is recommended to obtain a detailed estimate from a reputable auto repair shop to determine the exact cost for resolving this issue.
Tech Notes for P0137 2018 GMC Sierra
User Submitted Video
Need more information about the P0137 2018 GMC Sierra code?
Need more information on how to fix the P0137 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0137 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0137 2018 GMC Sierra Code
No Frequently Asked Questions about P0137 2018 GMC Sierra Code found.
Discuss the causes and fixes for P0137 2018 GMC Sierra OBDII Code
Code P0137 2018 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.