AutoCodes – Chevrolet – U02A3 2015 Chevrolet Silverado

U02A3 2015 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 2015 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 288

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 2015 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 2015 Chevrolet Silverado - Lost Communication With Particulate Matter Sensor Module - AutoCodes.com — U02A3 2015 Chevrolet Silverado Code - Lost Communication With Particulate Matter Sensor Module

What does this mean?

What are the Possible Causes of the DTC U02A3 2015 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 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 U02A3 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 U02A3 2015 Chevrolet Silverado code?

Need more information on how to fix the U02A3 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 U02A3 2015 Chevrolet Silverado Code

1. What does OBDII code U02A3 in a 2015 Chevrolet Silverado indicate?

The code U02A3 signifies a communication issue between the vehicle's engine control module (ECM) and the particulate matter sensor module.

2. What are the common symptoms of U02A3 code in a Chevrolet Silverado?

Common symptoms include the illumination of the Check Engine Light, reduced engine performance, and potential issues with the vehicle's emissions system.

3. What are the possible causes of the U02A3 code in a 2015 Silverado?

Possible causes include damaged wiring or connectors, a faulty particulate matter sensor module, software glitches, or issues with the ECM.

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

Diagnosing the U02A3 code typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the wiring and connectors for damage, and testing the particulate matter sensor module for functionality.

5. Can I continue driving my Silverado with the U02A3 code present?

It is not recommended to drive your vehicle extensively with the U02A3 code present, as it can lead to potential issues with emissions and engine performance. It's best to address the problem promptly.

6. How can I repair the U02A3 code in my 2015 Chevrolet Silverado?

Repairing the U02A3 code may involve repairing or replacing damaged wiring, connectors, or the particulate matter sensor module, as well as reprogramming the ECM if necessary.

7. Can a DIY enthusiast fix the U02A3 code issue in a Silverado?

While some basic diagnostic steps can be performed by a DIY enthusiast, resolving the U02A3 code may require advanced tools and expertise. It's advisable to consult a professional mechanic for a thorough diagnosis and repair.

8. Is the U02A3 code a serious issue in a Chevrolet Silverado?

The U02A3 code should not be ignored, as it can affect the vehicle's emissions performance and overall engine operation. It's important to address the issue promptly to prevent further complications.

9. How much does it cost to fix the U02A3 code in a 2015 Chevrolet Silverado?

The cost of repairing the U02A3 code can vary depending on the underlying cause of the issue, the extent of the repairs needed, and labor costs. It's recommended to obtain quotes from different mechanics for an accurate estimate.

10. Can resetting the ECM clear the U02A3 trouble code in a Silverado?

Resetting the ECM may temporarily clear the trouble code, but if the underlying issue causing the U02A3 code is not addressed, the code is likely to reappear. It's best to diagnose and fix the root cause of the problem.