P119F 2016 GMC Sierra Code - NOx Sensor 2 Signal Circuit High Voltage
Quick Answer
The diagnostic trouble code P119F for a 2016 GMC Sierra indicates that there is a high voltage signal detected in the NOx (nitrogen oxide) sensor 2 signal circuit. Common causes include Faulty NOx sensor 2, Wiring issues such as shorts or opens, ECM 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
- P119F 2016 GMC Sierra indicates NOx Sensor 2 Signal Circuit High Voltage.
- Common causes
- Common causes include Faulty NOx sensor 2, Wiring issues such as shorts or opens, ECM 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 P119F 2016 GMC Sierra Description
The diagnostic trouble code P119F for a 2016 GMC Sierra indicates that there is a high voltage signal detected in the NOx (nitrogen oxide) sensor 2 signal circuit. This sensor is crucial for monitoring the levels of nitrogen oxide in the exhaust gases and ensuring that emissions are within regulatory limits. The NOx sensor 2 is typically located downstream of the catalytic converter.
Common Causes of P119F 2016 GMC Sierra
- Faulty NOx sensor 2
- Wiring issues such as shorts or opens
- ECM malfunction
- Exhaust system leaks
- Fuel system issues
Symptoms of P119F 2016 GMC Sierra
- Check Engine Light illuminated
- Decreased fuel efficiency
- Increased emissions
- Rough idling or hesitation during acceleration
- Failed emissions testing
How to Fix P119F 2016 GMC Sierra
- Diagnose the issue by using a scan tool to read the trouble codes and perform testing on the NOx sensor 2 signal circuit.
- Inspect the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the NOx sensor 2 for proper operation and replace if faulty.
- Clear the trouble codes and reset the ECM.
- Test drive the vehicle to ensure the issue has been resolved and the Check Engine Light does not come back on.
Cost to Fix P119F 2016 GMC Sierra
The cost of repairing a high voltage signal in the NOx sensor 2 signal circuit can vary depending on the specific cause of the issue. On average, the cost of replacing a NOx sensor can range from $200 to $500, including parts and labor. However, if the issue is related to wiring or ECM problems, 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 for your 2016 GMC Sierra. Labor rates at auto repair shops can vary, so it's advisable to check local rates for a more precise estimate.
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Frequently Asked Questions about P119F 2016 GMC Sierra Code
1. What does the OBDII code P119F mean on a 2016 GMC Sierra?
Code P119F indicates a high voltage issue in the signal circuit for NOx Sensor 2, which monitors nitrogen oxide levels in the exhaust system.
2. What are the common symptoms of code P119F in a 2016 GMC Sierra?
Common symptoms include the Check Engine Light turning on, reduced fuel efficiency, poor engine performance, and possible activation of limp mode.
3. What causes the P119F code to appear on a 2016 GMC Sierra?
This code can be triggered by a faulty NOx Sensor 2, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).
4. Can I drive my 2016 GMC Sierra with code P119F?
It is not recommended to drive for extended periods with this code active, as it may lead to increased emissions, poor performance, and potential damage to the exhaust system.
5. How do I diagnose the P119F code on a 2016 GMC Sierra?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors for damage, and testing the NOx Sensor 2 for proper operation.
6. What are the repair options for code P119F on a 2016 GMC Sierra?
Repairs may include replacing the NOx Sensor 2, repairing damaged wiring or connectors, and updating or reprogramming the ECM if necessary.
7. How much does it cost to fix the P119F code on a 2016 GMC Sierra?
Repair costs can vary but typically range from $300 to $800, depending on whether the NOx sensor or wiring needs replacement.
8. Can a bad NOx Sensor 2 cause other problems in my 2016 GMC Sierra?
Yes, a faulty NOx Sensor 2 can lead to increased emissions, reduced fuel efficiency, and potential damage to the catalytic converter over time.
9. How often should NOx sensors be replaced on a 2016 GMC Sierra?
NOx sensors typically last 80,000 to 100,000 miles, but premature failure can occur due to contamination or electrical issues.
10. Will clearing the code reset the P119F issue on a 2016 GMC Sierra?
Clearing the code may temporarily turn off the Check Engine Light, but if the underlying issue isn’t fixed, the code will return.
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