P143A 2014 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 2014 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.
Code P143A 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P143A 2014 Chevrolet Silverado?
- Faulty Reductant Control System
How to Fix the DTC P143A 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 P143A 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 P143A 2014 Chevrolet Silverado code?
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Frequently Asked Questions about P143A 2014 Chevrolet Silverado Code
1. What does the OBDII code P143A mean for a 2014 Chevrolet Silverado?
P143A indicates an issue with the Reductant Control System, specifically that the diagnostic signal message counter is incorrect, which may affect the diesel exhaust fluid (DEF) system.
2. What are the symptoms of code P143A in a 2014 Chevrolet Silverado?
Common symptoms include a check engine light, potential DEF system warnings, possible restricted power mode, and issues with emissions performance.
3. What causes the P143A code to appear in a Chevrolet Silverado?
The code can be triggered by communication errors between the reductant control module and the ECM, software glitches, a faulty reductant control module, or wiring/connectivity issues.
4. Can I still drive my 2014 Silverado with the P143A code active?
While you can drive the truck, prolonged driving with this code active may lead to restricted power mode or emissions non-compliance, so it’s best to address the issue promptly.
5. How is the P143A code diagnosed?
A technician will use a scan tool to verify the code, check communication between the ECM and reductant control module, inspect wiring and connectors, and may perform software updates or module reprogramming.
6. What repairs are commonly needed for the P143A code?
Repairs may include reprogramming or replacing the reductant control module, repairing damaged wiring or connectors, and updating the ECM software if needed.
7. How much does it cost to fix the P143A code on a 2014 Silverado?
Repair costs can vary but typically range from $200 to $600, depending on whether the module needs replacement or if software updates and minor wiring repairs are sufficient.
8. Can a faulty DEF system cause the P143A code?
Yes, issues in the DEF system, such as communication errors or module faults, can contribute to the P143A code being triggered.
9. Is there a recall for the P143A code on the 2014 Chevrolet Silverado?
As of now, no specific recalls address this code, but it’s recommended to check with your local dealer for any applicable service bulletins or campaigns.
10. Will clearing the P143A code fix the problem permanently?
Clearing the code does not fix the underlying issue. Proper diagnosis and repair are required to prevent the code from returning.
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