P116C 2017 GMC Sierra Code - O2 Signal Circuit High Voltage (NOx Sensor 1)
Quick Answer
The P116C diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a high voltage signal from the NOx sensor 1, which is also known as the oxygen sensor. Common causes include Faulty NOx sensor 1, Wiring issues (shorts, open circuits), 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
- P116C 2017 GMC Sierra indicates O2 Signal Circuit High Voltage (NOx Sensor 1).
- Common causes
- Common causes include Faulty NOx sensor 1, Wiring issues (shorts, open circuits), 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 P116C 2017 GMC Sierra Description
The P116C diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a high voltage signal from the NOx sensor 1, which is also known as the oxygen sensor. The NOx sensor is responsible for monitoring the level of nitrogen oxide (NOx) emissions in the exhaust gases and sending this information to the engine control module (ECM). When the signal voltage from the NOx sensor 1 is higher than expected, it can lead to issues with the vehicle's emissions control system.
Common Causes of P116C 2017 GMC Sierra
- Faulty NOx sensor 1
- Wiring issues (shorts, open circuits)
- ECM malfunction
- Exhaust system leaks
- Contaminated fuel
Symptoms of P116C 2017 GMC Sierra
- Reduced fuel efficiency
- Rough idling or stalling
- Increased emissions
- Check Engine Light illuminated
How to Fix P116C 2017 GMC Sierra
- Begin by conducting a thorough inspection of the NOx sensor 1 and its wiring harness to check for any visible damage or corrosion.
- Use a multimeter to test the voltage output of the NOx sensor 1 while the engine is running to verify if it is within the specified range.
- If the NOx sensor 1 is faulty, replace it with a new sensor and ensure proper installation.
- Check and repair any damaged wiring or connectors in the O2 signal circuit.
- Clear the DTC from the ECM memory and perform a test drive to confirm that the issue has been resolved.
Cost to Fix P116C 2017 GMC Sierra
The typical repair costs for addressing a P116C DTC on a 2017 GMC Sierra can vary depending on the specific cause of the issue. Replacement NOx sensors can range from $100 to $300, while labor costs can range from $100 to $200. Additional costs may include diagnostic fees and any necessary parts or materials. Overall, the total repair cost could range from $200 to $500, but it is advisable to check with local auto repair shops for more accurate pricing based on individual circumstances.
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Frequently Asked Questions about P116C 2017 GMC Sierra Code
1. What does the OBDII code P116C mean on a 2017 GMC Sierra?
P116C indicates that the Engine Control Module (ECM) has detected a high voltage signal issue in the oxygen (O2) sensor circuit for NOx Sensor 1.
2. What are the common symptoms of a P116C code on a GMC Sierra?
Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, or the vehicle entering limp mode.
3. What causes the P116C code to appear on a 2017 GMC Sierra?
Possible causes include a faulty NOx Sensor 1, damaged wiring or connectors in the O2 sensor circuit, or issues with the ECM.
4. Can a P116C code affect my vehicle’s performance?
Yes, it can lead to poor fuel economy, reduced engine power, and higher emissions.
5. How can I diagnose a P116C code on my GMC Sierra?
Diagnose the issue by using an OBDII scanner to confirm the code, inspecting the wiring and connectors for damage, and testing the NOx sensor for proper function.
6. How do I fix the P116C code on a 2017 GMC Sierra?
Repairs may involve replacing the NOx Sensor 1, repairing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
7. Can I drive my GMC Sierra with a P116C code?
It’s not recommended to drive long-term with this code, as it can increase emissions and potentially damage other components in the vehicle.
8. How much does it cost to repair a P116C code on a GMC Sierra?
The cost can range from $200 to $600, depending on whether the NOx sensor or wiring needs replacement and labor charges.
9. Is the P116C code related to emissions control?
Yes, it is related to the emissions system and affects the vehicle’s ability to monitor and reduce nitrogen oxide (NOx) emissions.
10. Can a software update fix the P116C code on a 2017 GMC Sierra?
In some cases, a software update or ECM reprogramming may resolve the issue, but this depends on the root cause of the code.
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