AutoCodes – Chevrolet – U02A3 2017 Chevrolet Silverado

U02A3 2017 Chevrolet Silverado Code - Lost Communication With Particulate Matter Sensor Module

Quick Answer

Devices connected to the Powertrain High-Speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter 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: U02A3 2017 Chevrolet Silverado indicates Lost Communication With Particulate Matter Sensor Module.
Common causes: Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter 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 396

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 Oct 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U02A3 2017 Chevrolet Silverado Description

Devices connected to the Powertrain High-Speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored DTC. The DTC will be set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U02A3 2017 Chevrolet Silverado - Lost Communication With Particulate Matter Sensor Module - AutoCodes.com — U02A3 2017 Chevrolet Silverado Code - Lost Communication With Particulate Matter Sensor Module

What does this mean?

What are the Possible Causes of the DTC U02A3 2017 Chevrolet Silverado?

Faulty Exhaust Particulate Matter Sensor
Exhaust Particulate Matter Sensor harness is open or shorted
Exhaust Particulate Matter Sensor circuit poor electrical connection

How to Fix the DTC U02A3 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 U02A3 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 U02A3 2017 Chevrolet Silverado code?

Need more information on how to fix the U02A3 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U02A3 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 U02A3 2017 Chevrolet Silverado Code

1. What are common symptoms of OBDII code U02A3 in a 2017 Chevrolet Silverado?

- Common symptoms include the check engine light coming on, decreased fuel efficiency, and potential issues with the vehicle's emissions system.

2. What does the OBDII code U02A3 mean on a 2017 Chevrolet Silverado?

- The code U02A3 indicates a lost communication with the Particulate Matter Sensor Module in the vehicle's emissions system.

3. What are possible causes of the U02A3 code in a 2017 Chevrolet Silverado?

- Possible causes include a faulty particulate matter sensor module, wiring issues, a blown fuse, or a malfunctioning engine control module (ECM).

4. How can I diagnose the U02A3 code on my 2017 Chevrolet Silverado?

- Diagnosing the U02A3 code typically involves using an OBDII scanner to retrieve the specific fault code, checking the wiring and connections to the particulate matter sensor module, and testing the sensor itself.

5. Can I still drive my 2017 Chevrolet Silverado with the U02A3 code present?

- It is generally not recommended to drive the vehicle with the U02A3 code present, as it can lead to potential issues with the emissions system and overall performance of the vehicle.

6. How can I repair the U02A3 code on my 2017 Chevrolet Silverado?

- Repairing the U02A3 code may involve replacing the particulate matter sensor module, repairing any damaged wiring or connections, or resetting the ECM after addressing any underlying issues.

7. Is it possible to reset the U02A3 code on a 2017 Chevrolet Silverado without fixing the underlying issue?

- While it is possible to clear the code temporarily, the underlying issue causing the U02A3 code will likely need to be addressed to prevent the code from reappearing.

8. Can a DIY enthusiast fix the U02A3 code on a 2017 Chevrolet Silverado?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the U02A3 code, but it is recommended to consult a professional mechanic for complex issues.

9. How much does it typically cost to repair the U02A3 code on a 2017 Chevrolet Silverado?

- The cost of repairing the U02A3 code can vary depending on the specific issue, but it may range from a couple hundred dollars for simple fixes to over a thousand dollars for more complex repairs involving sensor replacements.

10. Can the U02A3 code on a 2017 Chevrolet Silverado cause other problems if left unresolved?

- If left unresolved, the U02A3 code can potentially lead to further damage to the emissions system, decreased fuel efficiency, and issues with passing emissions tests.