P119E Chevrolet Code - NOx Sensor 2 Signal Circuit Low Voltage
Quick Answer
The P119E code for Chevrolet indicates a low voltage signal from the NOx (Nitrogen Oxide) sensor 2. Common causes include Faulty NOx sensor 2, Wiring or connector issues in the sensor circuit, ECM software or calibration issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P119E Chevrolet indicates NOx Sensor 2 Signal Circuit Low Voltage.
- Common causes
- Common causes include Faulty NOx sensor 2, Wiring or connector issues in the sensor circuit, ECM software or calibration issues.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P119E Chevrolet Description
The P119E code for Chevrolet indicates a low voltage signal from the NOx (Nitrogen Oxide) sensor 2. The NOx sensor is a crucial component in modern vehicles equipped with Selective Catalytic Reduction (SCR) systems to reduce harmful emissions. The NOx sensor measures the levels of nitrogen oxide in the exhaust gases and sends this data to the engine control module (ECM) to optimize the air-fuel mixture for efficient combustion and emission control.
Common Causes of P119E Chevrolet
- Faulty NOx sensor 2
- Wiring or connector issues in the sensor circuit
- ECM software or calibration issues
- Exhaust system leaks or damage
- Engine coolant leaks contaminating the sensor
Symptoms of P119E Chevrolet
- Check engine light illuminated
- Reduced fuel efficiency
- Poor engine performance
- Increased emissions
- Failed emissions tests
How to Fix P119E Chevrolet
- Perform a thorough diagnostic scan to confirm the P119E code and identify the specific issue with the NOx sensor 2.
- Inspect the sensor wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the NOx sensor 2 for proper functionality and replace it if it is faulty.
- Clear the code from the ECM and reset the system adaptations.
- Test drive the vehicle to ensure the code does not return and the NOx sensor is operating correctly.
Cost to Fix P119E Chevrolet
The cost of repairing a P119E code for Chevrolet can vary depending on the specific cause of the issue. On average, the cost of replacing a NOx sensor 2 can range from $200 to $500, including parts and labor. Additional costs may be incurred if wiring repairs or ECM reprogramming are necessary. It's recommended to consult with a certified mechanic or dealership for an accurate cost estimate based on the vehicle's make, model, and location.
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Information for Specific Chevrolet Models
- P119E 2014 Chevrolet Silverado — NOx Sensor 2 Signal Circuit Low Voltage
- P119E 2015 Chevrolet Silverado — NOx Sensor 2 Signal Circuit Low Voltage
- P119E 2016 Chevrolet Silverado — NOx Sensor 2 Signal Circuit Low Voltage
- P119E 2017 Chevrolet Silverado — NOx Sensor 2 Signal Circuit Low Voltage
- P119E 2018 Chevrolet Silverado — NOx Sensor 2 Signal Circuit Low Voltage
Frequently Asked Questions about P119E Chevrolet Code
1. What does the OBDII code P119E mean on a Chevrolet?
P119E indicates a "NOx Sensor 2 Signal Circuit Low Voltage," which means the second nitrogen oxide (NOx) sensor is detecting a lower-than-expected voltage signal.
2. What are the symptoms of a P119E code on a Chevrolet?
Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, and potential issues with emissions compliance.
3. What causes the P119E code to appear on a Chevrolet?
Common causes include a faulty NOx sensor, damaged sensor wiring or connectors, excessive soot buildup on the sensor, or a malfunctioning engine control module (ECM).
4. Can I drive my Chevrolet with a P119E code?
While the vehicle may still be drivable, it is not recommended as it may lead to increased emissions, reduced performance, and potential damage to the catalytic converter over time.
5. How do I diagnose the P119E code on my Chevrolet?
Begin by inspecting the NOx sensor and its wiring for damage or corrosion, checking for loose connections, and using a scan tool to monitor live sensor data for irregular readings.
6. How do I fix the P119E code on a Chevrolet?
Possible fixes include replacing the faulty NOx sensor, repairing or replacing damaged wiring or connectors, cleaning soot buildup, or reprogramming/updating the ECM.
7. How much does it cost to repair the P119E code on a Chevrolet?
Repair costs vary but typically range from $200 to $600, depending on whether the NOx sensor needs replacement or if wiring repairs are required.
8. Can a bad NOx sensor cause other problems in my Chevrolet?
Yes, a faulty NOx sensor can lead to poor engine performance, increased emissions, and potential damage to the exhaust system, including the catalytic converter.
9. How often should a NOx sensor be replaced on a Chevrolet?
NOx sensors generally last 50,000 to 100,000 miles, but early failures can occur due to soot buildup or electrical issues.
10. Is a P119E code covered under warranty for my Chevrolet?
Depending on your vehicle's age and mileage, the NOx sensor may be covered under the emissions warranty. Check with your Chevrolet dealer for specific warranty coverage.
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