AutoCodes – Chevrolet – P1160 2017 Chevrolet Silverado

P1160 2017 Chevrolet Silverado Code - O2 Reference Voltage Circuit High Voltage (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: P1160 2017 Chevrolet Silverado indicates O2 Reference Voltage Circuit High Voltage (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 226

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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 P1160 2017 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 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 P1160 2017 Chevrolet Silverado - O2 Reference Voltage Circuit High Voltage (NOx Sensor 1) - AutoCodes.com — P1160 2017 Chevrolet Silverado Code - O2 Reference Voltage Circuit High Voltage (NOx Sensor 1)

What does this mean?

What are the Possible Causes of the DTC P1160 2017 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 P1160 2017 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 P1160 2017 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 P1160 2017 Chevrolet Silverado code?

Need more information on how to fix the P1160 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1160 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1160 in a 2017 Chevrolet Silverado?

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

2. What does the OBDII code P1160 indicating "O2 Reference Voltage Circuit High Voltage (NOx Sensor 1)" mean for a 2017 Chevrolet Silverado?

- This code indicates that there is a high voltage condition detected in the oxygen sensor reference circuit for the NOx sensor 1 in the vehicle.

3. What are the potential causes of OBDII code P1160 in a 2017 Chevrolet Silverado?

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

4. How serious is OBDII code P1160 in a 2017 Chevrolet Silverado?

- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the engine or emissions system.

5. How can I diagnose OBDII code P1160 in my 2017 Chevrolet Silverado?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors related to the NOx sensor, and testing the sensor itself for proper operation.

6. Can I still drive my 2017 Chevrolet Silverado with OBDII code P1160?

- It is generally not recommended to drive the vehicle extensively with this code present, as it can lead to decreased performance and potential long-term damage.

7. Is it possible to reset OBDII code P1160 in a 2017 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it will likely return if the root cause of the high voltage condition in the NOx sensor circuit is not addressed.

8. How much does it typically cost to repair OBDII code P1160 in a 2017 Chevrolet Silverado?

- The cost of repair can vary depending on the specific cause, but it may involve replacing the NOx sensor, repairing wiring or connectors, or reprogramming the engine control module.

9. Are there any DIY tips for addressing OBDII code P1160 in a 2017 Chevrolet Silverado?

- DIY tips may include checking for loose or damaged wiring, ensuring proper connections to the NOx sensor, and consulting the vehicle's service manual for specific troubleshooting steps.

10. Can a mechanic easily fix OBDII code P1160 in a 2017 Chevrolet Silverado?

- A skilled mechanic with experience in diagnosing and repairing automotive electrical systems should be able to efficiently address and resolve the issues causing this code in the vehicle.