P119B 2016 Chevrolet Silverado Code - NOx Sensor 1 Signal Circuit Low Voltage
Quick Answer
The P119B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the NOx (Nitrogen Oxide) Sensor 1 Signal Circuit registering low voltage. Common causes include Faulty NOx sensor, Wiring or connector issues in the NOx sensor circuit, ECM software malfunction. 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
- P119B 2016 Chevrolet Silverado indicates NOx Sensor 1 Signal Circuit Low Voltage.
- Common causes
- Common causes include Faulty NOx sensor, Wiring or connector issues in the NOx sensor circuit, ECM software malfunction.
- 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 P119B 2016 Chevrolet Silverado Description
The P119B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the NOx (Nitrogen Oxide) Sensor 1 Signal Circuit registering low voltage. The NOx sensor is a crucial component in the vehicle's emissions control system, responsible for monitoring and regulating the levels of nitrogen oxide in the exhaust gases. When the NOx Sensor 1 Signal Circuit detects low voltage, it indicates a potential problem with the sensor's ability to accurately measure and report the NOx levels to the engine control module (ECM).
Common Causes of P119B 2016 Chevrolet Silverado
- Faulty NOx sensor
- Wiring or connector issues in the NOx sensor circuit
- ECM software malfunction
- Exhaust system leaks or damage
- Exposure to high levels of contaminants or exhaust gases
Symptoms of P119B 2016 Chevrolet Silverado
- Check engine light illuminated
- Reduced fuel efficiency
- Failed emissions test
- Rough idling or hesitation during acceleration
- Decreased engine performance
How to Fix P119B 2016 Chevrolet Silverado
- Begin by conducting a thorough inspection of the NOx sensor, wiring, and connectors for any visible damage or corrosion.
- Test the NOx sensor using a multimeter to check for proper voltage output.
- If the sensor is faulty, replace it with a new, OEM-quality NOx sensor.
- Clear the DTC from the ECM memory using a diagnostic scan tool.
- Perform a test drive to ensure the repair has resolved the issue and that the check engine light does not reappear.
Cost to Fix P119B 2016 Chevrolet Silverado
The typical repair costs for addressing a P119B code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of a new NOx sensor can range from $200 to $500, with additional labor costs for diagnosis and installation. Overall, the total repair cost for this issue could range from $300 to $800, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.
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