AutoCodes – Chevrolet – U02A3 2014 Chevrolet Silverado

U02A3 2014 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 2014 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 277

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 2014 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 2014 Chevrolet Silverado - Lost Communication With Particulate Matter Sensor Module - AutoCodes.com — U02A3 2014 Chevrolet Silverado Code - Lost Communication With Particulate Matter Sensor Module

What does this mean?

What are the Possible Causes of the DTC U02A3 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the U02A3 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U02A3 2014 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 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U02A3 in a 2014 Chevrolet Silverado related to lost communication with the particulate matter sensor module?

- Common symptoms may include the check engine light illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.

2. What are some possible causes of OBDII code U02A3 in a 2014 Chevrolet Silverado?

- The code U02A3 could be triggered by a faulty particulate matter sensor module, damaged wiring or connectors, software issues, or communication network problems.

3. How can I diagnose the cause of OBDII code U02A3 in my 2014 Chevrolet Silverado?

- Diagnosing the issue may involve checking the wiring and connectors for any damage, testing the sensor module for functionality, and using diagnostic tools to inspect the communication network for faults.

4. Can I drive my 2014 Chevrolet Silverado with the OBDII code U02A3 active?

- It is not recommended to drive with the code active, as it can lead to potential emissions issues and affect the vehicle's performance. It's best to address the problem promptly.

5. How can I repair OBDII code U02A3 in my 2014 Chevrolet Silverado?

- Repairing the code may involve replacing the particulate matter sensor module, repairing any damaged wiring or connectors, updating software if necessary, and ensuring proper communication network function.

6. Is it possible to reset OBDII code U02A3 in a 2014 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code with a diagnostic tool, it is crucial to address the root cause to prevent the code from reoccurring and to maintain proper vehicle operation.

7. Are there any recalls or technical service bulletins related to OBDII code U02A3 in a 2014 Chevrolet Silverado?

- It is advisable to check with a Chevrolet dealership or online resources for any recalls or technical service bulletins specific to this code in your vehicle model and year.

8. Can a DIY enthusiast fix OBDII code U02A3 in a 2014 Chevrolet Silverado, or should I seek professional help?

- Depending on your automotive knowledge and skills, you may be able to address the issue yourself by following repair guides and using the necessary tools. However, if you are unsure, seeking professional help is recommended.

9. How much can I expect to pay for repairs related to OBDII code U02A3 in a 2014 Chevrolet Silverado?

- The cost of repairs can vary based on the specific cause of the code, parts needed, labor rates, and whether you choose to do the repairs yourself or take the vehicle to a mechanic. It's best to obtain quotes from reputable shops.

10. Will fixing OBDII code U02A3 improve the fuel efficiency of my 2014 Chevrolet Silverado?

- Resolving the issue related to the code can help ensure proper engine performance and emissions control, which may contribute to improved fuel efficiency in your vehicle.