P0137 2014 GMC Sierra Code - HO2S Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The P0137 diagnostic trouble code (DTC) for a 2014 GMC Sierra refers to a problem with the HO2S (Heated Oxygen Sensor) circuit having low voltage for Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leak in the exhaust system. 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 2014 GMC Sierra indicates HO2S Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty oxygen sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leak in the exhaust system.
- 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 P0137 2014 GMC Sierra Description
The P0137 diagnostic trouble code (DTC) for a 2014 GMC Sierra refers to a problem with the HO2S (Heated Oxygen Sensor) circuit having 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 information provided by this sensor is crucial for the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency.
Common Causes of P0137 2014 GMC Sierra
- Faulty oxygen sensor
- Damaged wiring or connectors in the sensor circuit
- Vacuum leak in the exhaust system
- Issue with the ECM
- Exhaust system leaks or damage
Symptoms of P0137 2014 GMC Sierra
- Decreased fuel efficiency
- Rough idling
- Hesitation during acceleration
- Increased emissions
- Check Engine Light illuminated on the dashboard
How to Fix P0137 2014 GMC Sierra
- Begin by using a scan tool to verify the P0137 code and ensure it is not a false alarm.
- Inspect the wiring and connectors in the HO2S circuit for any damage or corrosion. Repair or replace as necessary.
- Test the oxygen sensor itself using a multimeter to check for proper voltage output. Replace the sensor if it is faulty.
- Check for any exhaust leaks or damage that could be affecting the sensor's readings. Repair as needed.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0137 2014 GMC Sierra
The typical repair costs for addressing a P0137 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing an oxygen sensor can cost between $100 and $300, including parts and labor. However, if the problem is related to wiring or other components, the cost could be higher. It's recommended to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and repair needed. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your local area for a more precise cost estimate.
Tech Notes for P0137 2014 GMC Sierra
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Frequently Asked Questions about P0137 2014 GMC Sierra Code
1. What does the OBDII code P0137 mean on a 2014 GMC Sierra?
P0137 indicates low voltage in the HO2S (Heated Oxygen Sensor) circuit for Bank 1 Sensor 2, meaning the sensor is reporting lower-than-expected voltage.
2. What are the common symptoms of code P0137 in a 2014 GMC Sierra?
Symptoms may include the Check Engine Light turning on, reduced fuel efficiency, poor engine performance, or a failed emissions test.
3. Which sensor does P0137 refer to on my 2014 GMC Sierra?
P0137 refers to the downstream oxygen sensor (Sensor 2) on Bank 1, which monitors the catalytic converter's efficiency.
4. What causes the P0137 code on a 2014 GMC Sierra?
Common causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or a malfunctioning catalytic converter.
5. Can a dirty or clogged catalytic converter trigger the P0137 code?
Yes, a clogged or failing catalytic converter can cause incorrect readings from the downstream oxygen sensor, triggering P0137.
6. How do I diagnose the P0137 code on my 2014 GMC Sierra?
Start by inspecting the oxygen sensor and its wiring for damage, check for exhaust leaks, and use a multimeter to measure sensor voltage.
7. Can I drive my 2014 GMC Sierra with the P0137 code?
While it may be safe to drive short-term, ignoring the issue can lead to reduced fuel efficiency and potential damage to the catalytic converter.
8. How do I fix the P0137 code on a 2014 GMC Sierra?
Repairs may include replacing the oxygen sensor, repairing wiring, fixing exhaust leaks, or replacing a failing catalytic converter.
9. How much does it cost to fix the P0137 code on a 2014 GMC Sierra?
Replacing the oxygen sensor typically costs $200–$400, while addressing wiring or exhaust issues may vary depending on the extent of the damage.
10. Will clearing the P0137 code with a scan tool fix the problem permanently?
No, clearing the code will remove it temporarily, but the underlying issue must be repaired to prevent the code from returning.
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