P0137 2017 Chevrolet Silverado Code - HO2S Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
The P0137 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to an issue with the Heated Oxygen Sensor (HO2S) Circuit Low Voltage on Bank 1 Sensor 2. Common causes include Faulty Oxygen Sensor: The HO2S on Bank 1 Sensor 2 may be failing or have degraded over time, Wiring Issues: Damage to the wiring harness or connectors leading to the oxygen sensor can cause a low voltage signal, Exhaust Leaks: Leaks in the exhaust system can affect the accuracy of the oxygen sensor readings. 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 Chevrolet Silverado indicates HO2S Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Oxygen Sensor: The HO2S on Bank 1 Sensor 2 may be failing or have degraded over time, Wiring Issues: Damage to the wiring harness or connectors leading to the oxygen sensor can cause a low voltage signal, Exhaust Leaks: Leaks in the exhaust system can affect the accuracy of the oxygen sensor readings.
- 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 2017 Chevrolet Silverado Description
The P0137 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to an issue with the Heated Oxygen Sensor (HO2S) Circuit Low Voltage on Bank 1 Sensor 2. 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 ratio for optimal combustion. Bank 1 Sensor 2 is located downstream of the catalytic converter.
Common Causes of P0137 2017 Chevrolet Silverado
- Faulty Oxygen Sensor: The HO2S on Bank 1 Sensor 2 may be failing or have degraded over time.
- Wiring Issues: Damage to the wiring harness or connectors leading to the oxygen sensor can cause a low voltage signal.
- Exhaust Leaks: Leaks in the exhaust system can affect the accuracy of the oxygen sensor readings.
- Exhaust System Contamination: Contaminants such as oil or coolant can interfere with the sensor's operation.
- ECM Malfunction: A malfunctioning engine control module may not be properly interpreting the oxygen sensor data.
Symptoms of P0137 2017 Chevrolet Silverado
- Check Engine Light: The most common symptom associated with the P0137 code is the illumination of the Check Engine Light on the dashboard.
- Poor Fuel Economy: A faulty HO2S can result in incorrect air-fuel mixture adjustments, leading to decreased fuel efficiency.
- Rough Idling: The engine may idle roughly or inconsistently due to improper combustion caused by inaccurate oxygen sensor readings.
- Engine Misfires: Incorrect air-fuel ratios can cause engine misfires or hesitation during acceleration.
- Failed Emissions Test: A malfunctioning oxygen sensor can lead to increased emissions, potentially causing the vehicle to fail an emissions test.
How to Fix P0137 2017 Chevrolet Silverado
- Diagnose the Issue: Use a scan tool to retrieve the P0137 code and perform a visual inspection of the oxygen sensor and related wiring.
- Replace Oxygen Sensor: If the sensor is confirmed to be faulty, replace Bank 1 Sensor 2 with a new, OEM-equivalent part.
- Repair Wiring: Inspect the wiring harness for any damage or corrosion and repair or replace as needed.
- Clear Codes: After completing the repair, clear the DTC and test-drive the vehicle to ensure the issue has been resolved.
- Monitor Operation: Keep an eye on the Check Engine Light and monitor the oxygen sensor readings to verify that the repair was successful.
Cost to Fix P0137 2017 Chevrolet Silverado
The typical cost to address a P0137 code on a 2017 Chevrolet Silverado can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. This estimate includes the cost of a new oxygen sensor, potential wiring repairs, diagnostic time, and labor charges. Keep in mind that rates at auto repair shops vary, so it's recommended to obtain quotes from multiple shops to ensure you're getting a fair price.
Tech Notes for P0137 2017 Chevrolet Silverado
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