P1160 2015 GMC Sierra Code - O2 Reference Voltage Circuit High Voltage (NOx Sensor 1)
Quick Answer
The P1160 code for a 2015 GMC Sierra indicates an issue with the O2 Reference Voltage Circuit High Voltage, specifically related to the NOx Sensor 1. Common causes include Faulty NOx sensor, Damaged wiring or connectors in the O2 reference voltage circuit, Malfunctioning ECM. 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 2015 GMC Sierra indicates O2 Reference Voltage Circuit High Voltage (NOx Sensor 1).
- Common causes
- Common causes include Faulty NOx sensor, Damaged wiring or connectors in the O2 reference voltage circuit, Malfunctioning ECM.
- 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 P1160 2015 GMC Sierra Description
The P1160 code for a 2015 GMC Sierra indicates an issue with the O2 Reference Voltage Circuit High Voltage, specifically related to the NOx Sensor 1. This code signifies that the voltage being sent to the NOx sensor is higher than the expected range, which can lead to various performance issues in the vehicle. The NOx sensor is a crucial component in the exhaust system that monitors the levels of nitrogen oxide emissions, helping to ensure compliance with emissions regulations.
Common Causes of P1160 2015 GMC Sierra
- Faulty NOx sensor
- Damaged wiring or connectors in the O2 reference voltage circuit
- Malfunctioning ECM
- Issues with the power supply to the sensor
Symptoms of P1160 2015 GMC Sierra
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation during acceleration
- Check Engine Light illuminated
- Increased emissions output
How to Fix P1160 2015 GMC Sierra
- Diagnose the issue using a scan tool to confirm the P1160 code and pinpoint the exact cause.
- Inspect the wiring and connectors in the O2 reference voltage circuit for any damage or corrosion.
- Test the NOx sensor to determine if it is functioning correctly or needs replacement.
- Check the power supply to the sensor and ensure it is providing the correct voltage.
- Clear the code, make the necessary repairs, and reset the ECM to see if the issue has been resolved.
Cost to Fix P1160 2015 GMC Sierra
The cost of repairing a P1160 code on a 2015 GMC Sierra can vary depending on the exact cause of the issue. Typically, the cost of parts for a new NOx sensor can range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair costs for addressing this code could range from $200 to $500. It's important to keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate based on location, vehicle make and model, as well as the specific repairs needed. It's recommended to obtain quotes from local shops to get a more accurate estimate for your specific situation.
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Frequently Asked Questions about P1160 2015 GMC Sierra Code
1. What does the OBDII code P1160 mean on a 2015 GMC Sierra?
P1160 indicates an issue with the O2 reference voltage circuit, specifically high voltage detected in the NOx Sensor 1.
2. What are the symptoms of code P1160 on a GMC Sierra?
Common symptoms include an illuminated check engine light, reduced engine performance, poor fuel economy, and possible NOx sensor-related error messages.
3. What causes the P1160 code to appear on a 2015 GMC Sierra?
Possible causes include a faulty NOx sensor, damaged wiring or connectors in the O2 reference voltage circuit, or a malfunctioning ECM (engine control module).
4. Can I drive my 2015 GMC Sierra with the P1160 code active?
While the vehicle may still drive, it’s not recommended as the issue can lead to reduced performance and potential damage to the emissions system.
5. How do I diagnose the P1160 code on my GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, then test the NOx sensor and O2 reference voltage circuit using a multimeter or diagnostic tool.
6. How can I fix the P1160 code on a 2015 GMC Sierra?
Repairs may include replacing the faulty NOx sensor, repairing damaged wiring or connectors, or updating/reprogramming the ECM if necessary.
7. How much does it cost to repair a P1160 code on a GMC Sierra?
The cost can vary, but replacing a NOx sensor typically ranges from $300 to $600, while wiring repairs or ECM reprogramming may add additional costs.
8. How do I prevent the P1160 code from recurring on my GMC Sierra?
Regular maintenance, such as inspecting wiring and ensuring sensors are clean and functioning, can help prevent this issue.
9. Can a dirty air filter cause the P1160 code on a 2015 GMC Sierra?
While unlikely, a restricted air filter can contribute to emissions-related issues, so it’s important to ensure the air filter is clean and functional.
10. Does the P1160 code affect emissions testing for a 2015 GMC Sierra?
Yes, the P1160 code can cause your vehicle to fail an emissions test due to improper functioning of the NOx sensor and emissions control system.
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