AutoCodes – Chevrolet – P143A 2018 Chevrolet Silverado

P143A 2018 Chevrolet Silverado Code - Reductant Control System Diagnostic Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Reductant Control System. 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: P143A 2018 Chevrolet Silverado indicates Reductant Control System Diagnostic Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Reductant Control System.
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 235

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 Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P143A 2018 Chevrolet Silverado Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Reductant Control System Diagnostic Signal Message Counter is Incorrect.

OBDII Code P143A 2018 Chevrolet Silverado - Reductant Control System Diagnostic Signal Message Counter Incorrect - AutoCodes.com — P143A 2018 Chevrolet Silverado Code - Reductant Control System Diagnostic Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P143A 2018 Chevrolet Silverado?

Faulty Reductant Control System

How to Fix the DTC P143A 2018 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 P143A 2018 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 P143A 2018 Chevrolet Silverado code?

Need more information on how to fix the P143A 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P143A 2018 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 P143A 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P143A in a 2018 Chevrolet Silverado?

The common symptoms of code P143A in a 2018 Chevrolet Silverado include the check engine light coming on, reduced engine performance, and potentially decreased fuel efficiency.

2. What does the OBDII code P143A in a 2018 Chevrolet Silverado indicate?

Code P143A signifies an issue with the Reductant Control System Diagnostic Signal Message Counter being incorrect in the 2018 Chevrolet Silverado.

3. What are possible causes of OBDII code P143A in a 2018 Chevrolet Silverado?

Possible causes of code P143A in a 2018 Chevrolet Silverado include a faulty reductant control module, wiring issues in the reductant system, or a software glitch.

4. How can I diagnose OBDII code P143A in my 2018 Chevrolet Silverado?

Diagnosing code P143A involves using an OBDII scanner to retrieve the code, checking the reductant system components for any visible damage, and inspecting the wiring for any signs of wear or corrosion.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P143A?

It is not recommended to continue driving your 2018 Chevrolet Silverado with code P143A present, as it can lead to potential damage to the vehicle's emission control system and affect performance.

6. How do I repair OBDII code P143A in a 2018 Chevrolet Silverado?

Repairing code P143A may involve replacing the reductant control module, repairing any damaged wiring, or updating the software in the vehicle's computer system.

7. Will resetting the check engine light resolve OBDII code P143A in my 2018 Chevrolet Silverado?

Resetting the check engine light may temporarily clear the code, but it is important to diagnose and repair the underlying issue causing code P143A to prevent it from reoccurring.

8. Can a DIY enthusiast fix OBDII code P143A in a 2018 Chevrolet Silverado?

While some basic diagnostics and checks can be performed by a DIY enthusiast, diagnosing and repairing code P143A may require specialized tools and expertise, so it is recommended to consult a professional mechanic.

9. How much does it cost to repair OBDII code P143A in a 2018 Chevrolet Silverado?

The cost of repairing code P143A in a 2018 Chevrolet Silverado can vary depending on the underlying issue, parts needed for replacement, and labor costs at the repair shop.

10. Is OBDII code P143A a common issue in 2018 Chevrolet Silverado vehicles?

Code P143A is not as common as some other OBDII codes, but it can still occur in 2018 Chevrolet Silverado vehicles due to issues with the reductant control system. Regular maintenance and timely repairs can help prevent this code from appearing.