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P1192 2018 Chevrolet Silverado Code - O2 Low Reference Circuit (NOx Sensor 1)

Quick Answer

The P1192 diagnostic trouble code (DTC) in a 2018 Chevrolet Silverado indicates a problem with the O2 low reference circuit related to the NOx sensor 1. Common causes include Faulty NOx sensor, Damaged wiring or connectors in the O2 sensor 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
P1192 2018 Chevrolet Silverado indicates O2 Low Reference Circuit (NOx Sensor 1).
Common causes
Common causes include Faulty NOx sensor, Damaged wiring or connectors in the O2 sensor 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P1192 2018 Chevrolet Silverado Description

The P1192 diagnostic trouble code (DTC) in a 2018 Chevrolet Silverado indicates a problem with the O2 low reference circuit related to the NOx sensor 1. This code specifically points to an issue with the oxygen sensor's low reference circuit, which is responsible for providing a stable voltage reference for the sensor's operation. The NOx sensor, or nitrogen oxide sensor, is a crucial component in the vehicle's emissions control system, monitoring the levels of nitrogen oxides in the exhaust gases to ensure compliance with emissions regulations.

OBDII Code P1192 2018 Chevrolet Silverado - O2 Low Reference Circuit (NOx Sensor 1)
P1192 2018 Chevrolet Silverado Code - O2 Low Reference Circuit (NOx Sensor 1)

Common Causes of P1192 2018 Chevrolet Silverado

  1. Faulty NOx sensor
  2. Damaged wiring or connectors in the O2 sensor circuit
  3. ECM malfunction
  4. Corrosion or contamination in sensor connections
  5. Exhaust system leaks

Symptoms of P1192 2018 Chevrolet Silverado

  1. Check engine light illuminated
  2. Decreased fuel efficiency
  3. Rough idling or hesitation during acceleration
  4. Failed emissions test
  5. Reduced engine performance

How to Fix P1192 2018 Chevrolet Silverado

  1. Use an OBD-II scanner to retrieve the specific trouble code and diagnose the issue.
  2. Inspect the wiring and connectors in the O2 low reference circuit for damage or corrosion.
  3. Test the NOx sensor for proper operation and replace if necessary.
  4. Clear the trouble code and reset the ECM to see if the issue persists.
  5. Conduct a road test to ensure the problem has been resolved and the check engine light does not reappear.

Cost to Fix P1192 2018 Chevrolet Silverado

The typical repair costs for addressing a P1192 code in a 2018 Chevrolet Silverado can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also affect repair costs. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1192 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1192 in a 2018 Chevrolet Silverado?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.

2. What does the O2 Low Reference Circuit (NOx Sensor 1) code P1192 indicate in a 2018 Chevrolet Silverado?

- This code indicates an issue with the low reference circuit of the NOx sensor 1 in the exhaust system.

3. What are possible causes of OBDII code P1192 in a 2018 Chevrolet Silverado?

- Possible causes include a faulty NOx sensor, damaged wiring or connectors in the O2 sensor circuit, or issues with the engine control module.

4. How can I diagnose the O2 Low Reference Circuit (NOx Sensor 1) code P1192 in my 2018 Chevrolet Silverado?

- Diagnosis involves inspecting the NOx sensor and its wiring for damage, checking the connections, and using a scan tool to monitor sensor data.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P1192 active?

- It is not recommended to continue driving with this code active, as it can lead to further engine damage and reduced fuel efficiency.

6. How can I repair OBDII code P1192 in my 2018 Chevrolet Silverado?

- Repair options include replacing the NOx sensor, repairing damaged wiring or connectors, or reprogramming the engine control module.

7. Are there any DIY tips for addressing O2 Low Reference Circuit (NOx Sensor 1) code P1192 in a 2018 Chevrolet Silverado?

- DIY enthusiasts can start by visually inspecting the sensor and wiring for any visible issues before consulting a professional technician.

8. How much does it typically cost to fix OBDII code P1192 in a 2018 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the code, but it may range from $200 to $500 or more, including parts and labor.

9. Can a mechanic reset the Check Engine Light after repairing OBDII code P1192 in a 2018 Chevrolet Silverado?

- Yes, a mechanic can reset the Check Engine Light using a diagnostic scan tool after addressing the underlying issue causing the P1192 code.

10. Is O2 Low Reference Circuit (NOx Sensor 1) code P1192 a common problem in 2018 Chevrolet Silverado vehicles?

- While not extremely common, issues with the NOx sensor and related circuits can occur in 2018 Chevrolet Silverado trucks, leading to the P1192 code.

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