AutoCodes – Cadillac – P143A Cadillac

P143A Cadillac 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 Cadillac 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 459

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 Cadillac 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 Cadillac - Reductant Control System Diagnostic Signal Message Counter Incorrect - AutoCodes.com — P143A Cadillac Code - Reductant Control System Diagnostic Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P143A Cadillac?

Faulty Reductant Control System

How to Fix the DTC P143A Cadillac?

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 Cadillac 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.

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Get the P143A Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code P143A in a Cadillac related to the Reductant Control System Diagnostic Signal Message Counter Incorrect?

- Common symptoms may include the check engine light coming on, reduced engine performance, and potential issues with the vehicle's emission controls.

2. What causes OBDII code P143A in a Cadillac?

- This code is typically caused by a malfunction in the Reductant Control System, which is responsible for controlling the vehicle's emissions.

3. How serious is OBDII code P143A in a Cadillac?

- While the code itself may not cause immediate harm to the vehicle, unresolved issues with the Reductant Control System can lead to increased emissions and potential long-term damage to the engine.

4. Can I continue driving my Cadillac with OBDII code P143A?

- It is not recommended to ignore the code and continue driving, as it can affect the vehicle's performance and emissions. It is best to have the issue diagnosed and repaired as soon as possible.

5. How is OBDII code P143A diagnosed in a Cadillac?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code and then conducting further testing on the Reductant Control System components to pinpoint the exact issue.

6. What are some repair tips for fixing OBDII code P143A in a Cadillac?

- Repair tips may include checking and replacing faulty Reductant Control System components, clearing the code with an OBDII scanner, and performing a test drive to ensure the issue is resolved.

7. Can I reset OBDII code P143A in a Cadillac on my own?

- While you can attempt to clear the code using an OBDII scanner, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it cost to repair OBDII code P143A in a Cadillac?

- The cost of repairing this code can vary depending on the specific issue and the labor rates of the repair shop. It is recommended to get a diagnosis and repair estimate from a qualified mechanic.

9. Are there any preventative maintenance steps to avoid OBDII code P143A in a Cadillac?

- Regularly servicing the vehicle's emission control system, using high-quality fuel, and driving responsibly can help prevent issues that may trigger this code.

10. Is OBDII code P143A specific to Cadillac vehicles, or can it occur in other makes and models?

- While this specific code may be related to Cadillac vehicles, similar issues with the Reductant Control System can occur in other makes and models, leading to similar diagnostic trouble codes.