P143A Chevrolet 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 Chevrolet 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.
Code P143A Chevrolet Description
What are the Possible Causes of the DTC P143A Chevrolet?
- Faulty Reductant Control System
How to Fix the DTC P143A Chevrolet?
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 Chevrolet 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 Chevrolet code?
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Need Help with the Code?
Get the P143A Chevrolet code diagnosed by a professional: Find a repair shop in your area
Information for Specific Chevrolet Models
- P143A 2014 Chevrolet Silverado — Reductant Control System Diagnostic Signal Message Counter Incorrect
- P143A 2015 Chevrolet Silverado — Reductant Control System Diagnostic Signal Message Counter Incorrect
- P143A 2016 Chevrolet Silverado — Reductant Control System Diagnostic Signal Message Counter Incorrect
- P143A 2017 Chevrolet Silverado — Reductant Control System Diagnostic Signal Message Counter Incorrect
- P143A 2018 Chevrolet Silverado — Reductant Control System Diagnostic Signal Message Counter Incorrect
Frequently Asked Questions about P143A Chevrolet Code
1. What are the common symptoms of OBDII code P143A in a Chevrolet vehicle?
- Common symptoms include the Check Engine Light illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.
2. What causes the OBDII code P143A in a Chevrolet related to the Reductant Control System?
- The code is typically triggered by a discrepancy in the diagnostic signal message counter, indicating a communication error or malfunction within the reductant control system.
3. How serious is OBDII code P143A in a Chevrolet, and should it be addressed immediately?
- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to the emissions system and ensure optimal engine performance.
4. Are there any DIY repair tips for resolving OBDII code P143A in a Chevrolet?
- DIY repair options may include checking for loose or damaged wiring connections related to the reductant control system, resetting the code using an OBDII scanner, or inspecting the DEF (diesel exhaust fluid) tank for proper levels and functioning.
5. Can driving with OBDII code P143A in a Chevrolet cause further damage to the vehicle?
- Continued driving with the code may lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the exhaust and emissions system components.
6. How can a mechanic diagnose and repair OBDII code P143A in a Chevrolet effectively?
- A mechanic may use specialized diagnostic equipment to pinpoint the exact cause of the code, inspect wiring and sensor connections, test the reductant control system components, and reset the code after making necessary repairs.
7. Is it safe to clear the OBDII code P143A in a Chevrolet without addressing the underlying issue?
- Clearing the code without fixing the root cause may temporarily turn off the Check Engine Light, but the issue will likely resurface, leading to potential emissions system problems and decreased engine performance.
8. Can extreme weather conditions or poor-quality DEF fluid contribute to triggering OBDII code P143A in a Chevrolet?
- Yes, extreme temperatures, humidity, or using low-quality DEF fluid can impact the proper functioning of the reductant control system and potentially trigger the diagnostic signal message counter error.
9. How long does it typically take to repair OBDII code P143A in a Chevrolet at a professional repair shop?
- The repair time can vary based on the exact cause of the code, but it may take anywhere from a few hours to a day, depending on the complexity of the diagnostic and repair procedures required.
10. Are there any recalls or technical service bulletins related to OBDII code P143A in Chevrolet vehicles?
- It's recommended to check with a Chevrolet dealership or online resources for any relevant recalls or technical service bulletins related to the Reductant Control System Diagnostic Signal Message Counter Incorrect code.
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