P1160 2017 GMC Sierra Code - O2 Reference Voltage Circuit High Voltage (NOx Sensor 1)
Quick Answer
The P1160 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the O2 reference voltage circuit, specifically high voltage detected in the NOx Sensor 1. Common causes include Faulty NOx sensor, Wiring issues in the O2 reference voltage circuit, 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
- P1160 2017 GMC Sierra indicates O2 Reference Voltage Circuit High Voltage (NOx Sensor 1).
- Common causes
- Common causes include Faulty NOx sensor, Wiring issues in the O2 reference voltage circuit, 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 P1160 2017 GMC Sierra Description
The P1160 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the O2 reference voltage circuit, specifically high voltage detected in the NOx Sensor 1. This code is related to the oxygen sensor's operation, which plays a crucial role in monitoring and adjusting the air-fuel mixture in the engine for optimal combustion. The NOx sensor is responsible for detecting nitrogen oxide levels in the exhaust gases to ensure compliance with emissions regulations.
Common Causes of P1160 2017 GMC Sierra
- Faulty NOx sensor
- Wiring issues in the O2 reference voltage circuit
- ECM malfunction
- Exhaust leaks
- Contaminated sensor
Symptoms of P1160 2017 GMC Sierra
- Decreased fuel efficiency
- Rough idling or stalling
- Check Engine Light illuminated
- Reduced engine power
- Increased emissions
How to Fix P1160 2017 GMC Sierra
- Diagnose the issue by using a scan tool to read the DTC and perform a visual inspection of the sensor and wiring.
- Test the NOx sensor's voltage output and resistance to determine if it is functioning properly.
- Check the wiring harness for any damage or loose connections and repair as needed.
- Clear the DTC and reset the ECM to see if the issue reoccurs after the repair.
- If the problem persists, consider replacing the NOx sensor or consulting a professional technician for further diagnosis.
Cost to Fix P1160 2017 GMC Sierra
The cost of repairing a P1160 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing the NOx sensor or repairing wiring harnesses can range from $200 to $500, including parts and labor. However, additional diagnostic fees and potential ECM reprogramming may increase the overall cost. It's recommended to consult with a trusted mechanic or dealership to get an accurate estimate based on your vehicle's specific needs and location. Labor rates typically range from $80 to $150 per hour, but can vary based on the repair shop's location and expertise.
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Frequently Asked Questions about P1160 2017 GMC Sierra Code
What does the OBDII code P1160 mean on a 2017 GMC Sierra?
P1160 indicates an issue with the O2 reference voltage circuit being too high in the NOx Sensor 1, which monitors nitrogen oxide levels in the exhaust system.
What are the symptoms of a P1160 code on a 2017 GMC Sierra?
Symptoms may include an illuminated check engine light, reduced fuel efficiency, poor engine performance, or the vehicle entering limp mode.
What causes the P1160 code on a 2017 GMC Sierra?
Common causes include a faulty NOx sensor, damaged wiring or connectors in the O2 reference voltage circuit, or issues with the powertrain control module (PCM).
How do I fix the P1160 code on my GMC Sierra?
Repairs may involve replacing the NOx sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or updating/reprogramming the PCM if necessary.
Can I drive with a P1160 code on my 2017 GMC Sierra?
It’s not recommended, as driving with this code can lead to reduced performance, increased emissions, and further damage to the exhaust or engine systems.
How do I diagnose a P1160 code on my GMC Sierra?
Use an OBDII scanner to confirm the code, inspect the NOx sensor wiring and connectors for damage, and test the sensor’s voltage and circuit continuity.
How much does it cost to repair a P1160 code on a GMC Sierra?
Repair costs vary but typically range from $200 to $600, depending on whether the NOx sensor or wiring requires replacement.
Can a bad NOx sensor cause other problems in my GMC Sierra?
Yes, a faulty NOx sensor can lead to increased emissions, poor fuel economy, and potential damage to the catalytic converter over time.
Is a P1160 code related to emissions testing?
Yes, a P1160 code may cause your vehicle to fail an emissions test because it indicates an issue with the NOx monitoring system.
What tools do I need to fix the P1160 code on my 2017 GMC Sierra?
You’ll need an OBDII scanner, a multimeter to test voltage and continuity, and basic tools for accessing and replacing the NOx sensor or repairing wiring.
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