P1160 2014 GMC Sierra Code - O2 Reference Voltage Circuit High Voltage (NOx Sensor 1)
Quick Answer
The P1160 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the O2 reference voltage circuit, specifically a high voltage condition in the NOx sensor 1. Common causes include Faulty NOx Sensor: A malfunctioning NOx sensor can cause high voltage readings in the O2 reference voltage circuit, Wiring Issues: Corrosion, damaged wiring, or poor connections in the O2 reference voltage circuit can lead to a high voltage condition, ECM Malfunction: A faulty Engine Control Module may send incorrect signals to the O2 reference voltage circuit, resulting in high voltage readings. 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
- P1160 2014 GMC Sierra indicates O2 Reference Voltage Circuit High Voltage (NOx Sensor 1).
- Common causes
- Common causes include Faulty NOx Sensor: A malfunctioning NOx sensor can cause high voltage readings in the O2 reference voltage circuit, Wiring Issues: Corrosion, damaged wiring, or poor connections in the O2 reference voltage circuit can lead to a high voltage condition, ECM Malfunction: A faulty Engine Control Module may send incorrect signals to the O2 reference voltage circuit, resulting in high voltage readings.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1160 2014 GMC Sierra Description
The P1160 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the O2 reference voltage circuit, specifically a high voltage condition in the NOx sensor 1. The NOx sensor, or nitrogen oxide sensor, is responsible for monitoring the levels of nitrogen oxide in the exhaust gases to ensure compliance with emission standards. The O2 reference voltage circuit provides a stable voltage reference for the sensor to accurately measure NOx levels.
Common Causes of P1160 2014 GMC Sierra
- Faulty NOx Sensor: A malfunctioning NOx sensor can cause high voltage readings in the O2 reference voltage circuit.
- Wiring Issues: Corrosion, damaged wiring, or poor connections in the O2 reference voltage circuit can lead to a high voltage condition.
- ECM Malfunction: A faulty Engine Control Module may send incorrect signals to the O2 reference voltage circuit, resulting in high voltage readings.
- Sensor Calibration: Improper sensor calibration or software glitches can also trigger the P1160 code.
Symptoms of P1160 2014 GMC Sierra
- Check Engine Light: The most common symptom associated with the P1160 code is the illumination of the Check Engine Light on the vehicle's dashboard.
- Reduced Fuel Efficiency: A high voltage condition in the O2 reference voltage circuit can lead to incorrect fuel mixture calculations, resulting in decreased fuel efficiency.
- Engine Misfires: The ECM may struggle to adjust fuel levels accurately, leading to engine misfires or rough idling.
- Emission Test Failure: If the NOx sensor is not functioning properly due to the high voltage condition, the vehicle may fail emission tests due to increased nitrogen oxide emissions.
How to Fix P1160 2014 GMC Sierra
- Diagnostic Scan: Begin by using an OBD-II scanner to retrieve the specific trouble code and verify the issue with the O2 reference voltage circuit.
- Inspect Wiring: Thoroughly inspect the wiring harness and connectors of the O2 reference voltage circuit for any signs of damage, corrosion, or loose connections.
- Check NOx Sensor: Test the NOx sensor to determine if it is functioning correctly or if it requires replacement.
- Repair or Replace Components: Repair or replace any damaged wiring, connectors, or components in the O2 reference voltage circuit as needed to resolve the high voltage condition.
- Clear Codes: After completing the repairs, clear the DTCs from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1160 2014 GMC Sierra
The typical repair costs for addressing a P1160 code in a 2014 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of parts for replacing a NOx sensor or repairing wiring issues can range from $200 to $500. Labor costs may add an additional $100 to $200, bringing the total repair estimate to approximately $300 to $700. However, it's important to note that labor rates at auto repair shops can vary, so it's advisable to obtain quotes from local shops for a more accurate estimate. Additionally, the cost of diagnostic testing and any additional repairs may impact the final cost of addressing the P1160 code.
Need more information about the P1160 2014 GMC Sierra code?
Need more information on how to fix the P1160 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1160 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1160 2014 GMC Sierra Code
1. What does the OBDII code P1160 mean on a 2014 GMC Sierra?
P1160 indicates an issue with the O2 reference voltage circuit for NOx Sensor 1, typically caused by a high voltage condition.
2. What are the common symptoms of code P1160 in a 2014 GMC Sierra?
Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, or issues with emissions control.
3. What causes the P1160 code to appear on a 2014 GMC Sierra?
Common causes include a faulty NOx sensor, wiring issues such as damaged or corroded connectors, or a malfunctioning engine control module (ECM).
4. Can I drive my 2014 GMC Sierra with the P1160 code?
While the vehicle may still be drivable, it’s not recommended to ignore this code as it can lead to increased emissions and potential engine performance issues.
5. How do I diagnose the P1160 code on a 2014 GMC Sierra?
Use an OBDII scanner to confirm the code, inspect the NOx sensor wiring and connectors for damage, and check the reference voltage signal from the ECM.
6. How is the P1160 code fixed on a 2014 GMC Sierra?
Repairs may involve replacing the faulty NOx sensor, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.
7. What tools are needed to troubleshoot code P1160 on a 2014 GMC Sierra?
You’ll need an OBDII scanner, a multimeter to test voltages, and possibly a NOx sensor socket for removal and replacement.
8. How much does it cost to fix the P1160 code on a 2014 GMC Sierra?
Repair costs can vary but typically range from $200 to $600, depending on whether the NOx sensor or ECM needs replacement.
9. Can a dirty air filter cause the P1160 code on a 2014 GMC Sierra?
No, a dirty air filter is unlikely to cause this specific code, as it relates to the NOx sensor's reference voltage circuit.
10. Does the P1160 code affect emissions testing on a 2014 GMC Sierra?
Yes, this code can cause your vehicle to fail an emissions test due to improper functioning of the NOx sensor.
Discuss the causes and fixes for P1160 2014 GMC Sierra OBDII Code
Code P1160 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.