AutoCodes – Chevrolet – P1192 2015 Chevrolet Silverado

P1192 2015 Chevrolet Silverado Code - O2 Low Reference Circuit (NOx Sensor 1)

Quick Answer

The Nitrogen Oxides (NOx) sensors are part of the selective catalytic reduction system, a device used to reduce NOx emission on diesel engines. Common causes include Faulty Nitrogen Oxides (NOx) Sensor, Nitrogen Oxides Sensor harness is open or shorted, Nitrogen Oxides Sensor circuit poor electrical connection. 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 2015 Chevrolet Silverado indicates O2 Low Reference Circuit (NOx Sensor 1).
Common causes: Common causes include Faulty Nitrogen Oxides (NOx) Sensor, Nitrogen Oxides Sensor harness is open or shorted, Nitrogen Oxides Sensor circuit poor electrical connection.
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 Popularity 249

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 24, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1192 2015 Chevrolet Silverado Description

The Nitrogen Oxides (NOx) sensors are part of the selective catalytic reduction system, a device used to reduce NOx emission on diesel engines. There are two NOx sensors, one placed upstream of selective catalytic reduction, to measure inlet NOx concentration, and one placed downstream. They are connected with the control module via CAN and all the information is exchanged through it. Since it is a smart sensor, all the electrical monitoring is performed inside the sensor and only the results are sent to the Engine Control Module (ECM). Each NOx sensor contains a sensing cell, a pumping cell, and a heater. A sample of exhaust gas passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit within the sensor controls the pump current through the pumping cell in order to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the concentration of NOx in the exhaust. The ECM varies the amount of diesel exhaust fluid (reductant) added by varying the reductant injector duty cycle in response to changes in engine exhaust NOx levels. The smart NOx sensors consist of two components, the NOx module and the NOx sensor element that are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM over the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module. The Diagnostic Trouble Code (DTC) will be set if the ECM software detects a fault in the NOx sensor circuitry or a performance fault in the NOx sensor for greater than 2 s.

OBDII Code P1192 2015 Chevrolet Silverado - O2 Low Reference Circuit (NOx Sensor 1) - AutoCodes.com — P1192 2015 Chevrolet Silverado Code - O2 Low Reference Circuit (NOx Sensor 1)

What does this mean?

What are the Possible Causes of the DTC P1192 2015 Chevrolet Silverado?

Faulty Nitrogen Oxides (NOx) Sensor
Nitrogen Oxides Sensor harness is open or shorted
Nitrogen Oxides Sensor circuit poor electrical connection

How to Fix the DTC P1192 2015 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1192 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1192 2015 Chevrolet Silverado code?

Need more information on how to fix the P1192 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2015 Chevrolet Silverado Code

1. What does OBDII code P1192 mean for a 2015 Chevrolet Silverado?

Code P1192 indicates an issue with the "O2 Low Reference Circuit" for NOx Sensor 1, which can affect the vehicle's emissions system performance.

2. What are common symptoms of code P1192 in a 2015 Chevrolet Silverado?

Symptoms may include a check engine light, reduced fuel efficiency, poor engine performance, or difficulty passing emissions tests.

3. What causes code P1192 in a 2015 Chevrolet Silverado?

Common causes include wiring issues (e.g., damaged or corroded wires), a faulty NOx sensor, or poor electrical connections in the O2 reference circuit.

4. Can driving with code P1192 damage my 2015 Chevrolet Silverado?

While it may not cause immediate damage, prolonged driving with this code can lead to increased emissions, reduced fuel efficiency, and potential damage to the catalytic converter.

5. How do I diagnose code P1192 in a 2015 Chevrolet Silverado?

Use an OBDII scanner to confirm the code, then inspect the wiring and connections for the NOx sensor. If no visible damage is found, the sensor may need testing or replacement.

6. How do I fix code P1192 on a 2015 Chevrolet Silverado?

Repairs may involve replacing the NOx sensor, repairing or replacing damaged wiring, or cleaning corroded electrical connectors in the O2 reference circuit.

7. How much does it cost to repair code P1192 in a 2015 Chevrolet Silverado?

Costs vary depending on the issue. A new NOx sensor can cost $200â€“$400, plus labor. Wiring repairs may cost less if the sensor is functioning correctly.

8. Can I fix code P1192 on my own?

If you have experience with automotive diagnostics, you can inspect the wiring and replace the NOx sensor yourself. For complex issues, professional assistance is recommended.

9. What tools do I need to troubleshoot code P1192 on a 2015 Chevrolet Silverado?

Youâ€™ll need an OBDII scanner, a multimeter for electrical testing, and basic tools to inspect and repair wiring or replace the NOx sensor.

10. How can I prevent code P1192 from occurring in my 2015 Chevrolet Silverado?

Regular maintenance, including checking wiring and electrical connections, can help prevent circuit-related issues. Use quality fuel and follow recommended service intervals for emissions components.