P143B 2016 Chevrolet Silverado Code - Reductant Control System Information Signal Message Counter Incorrect
Quick Answer
The P143B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Reductant Control System Information Signal Message Counter being incorrect. Common causes include Faulty Reductant Control Module, Malfunctioning Reductant Control System sensors, Wiring issues or electrical faults. 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
- P143B 2016 Chevrolet Silverado indicates Reductant Control System Information Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Reductant Control Module, Malfunctioning Reductant Control System sensors, Wiring issues or electrical faults.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P143B 2016 Chevrolet Silverado Description
The P143B diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Reductant Control System Information Signal Message Counter being incorrect. The Reductant Control System is an essential component of the vehicle's emissions system, specifically designed to reduce harmful emissions by injecting a urea-based solution (Diesel Exhaust Fluid or DEF) into the exhaust stream. This process helps convert nitrogen oxides (NOx) into harmless nitrogen and water vapor.
Common Causes of P143B 2016 Chevrolet Silverado
- Faulty Reductant Control Module
- Malfunctioning Reductant Control System sensors
- Wiring issues or electrical faults
- Incorrect DEF fluid quality or level
- Software or programming errors
Symptoms of P143B 2016 Chevrolet Silverado
- Check engine light illuminated
- Reduced fuel efficiency
- Increased emissions
- Engine hesitation or rough idling
- Failed emissions tests
How to Fix P143B 2016 Chevrolet Silverado
- Use a diagnostic scan tool to retrieve the DTC and identify the specific cause of the issue.
- Inspect the Reductant Control System components, including sensors, wiring, and the control module, for any visible damage or signs of malfunction.
- Test the DEF quality and level to ensure it meets the manufacturer's specifications.
- Clear the DTC and reset the system to see if the code reappears after repairs.
- Replace any faulty components, repair wiring or electrical issues, and reprogram the control module if necessary to correct the P143B code.
Cost to Fix P143B 2016 Chevrolet Silverado
The typical repair costs for addressing a P143B code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts such as sensors, wiring, or the control module can range from $100 to $500, while labor costs may add an additional $100 to $300. Overall, the total repair cost for this issue could range from $200 to $800, including parts and labor.
Need more information about the P143B 2016 Chevrolet Silverado code?
Need more information on how to fix the P143B 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P143B 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P143B 2016 Chevrolet Silverado Code
1. What does the OBDII code P143B mean on a 2016 Chevrolet Silverado?
P143B indicates an issue with the reductant control system, specifically that the information signal message counter is incorrect, potentially affecting the diesel exhaust fluid (DEF) system.
2. What are the symptoms of code P143B on a 2016 Chevrolet Silverado?
Common symptoms include the check engine light turning on, potential DEF system warnings, and possible reduction in engine performance if the system isn’t addressed.
3. What causes the P143B code to appear?
This code is typically caused by communication issues between the reductant control module and the engine control module (ECM), such as a faulty module, wiring problems, or corrupted data.
4. Can a failing reductant control module cause the P143B code?
Yes, a failing or malfunctioning reductant control module is a common cause of this code, as it can send incorrect or corrupted signal data.
5. How can I diagnose the P143B code on my Silverado?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the wiring and connections to the reductant control module, and testing the module itself for proper operation.
6. Is it safe to drive my Silverado with the P143B code active?
While you may be able to drive the truck short-term, ignoring the issue can lead to reduced engine performance, DEF system malfunctions, or emissions non-compliance.
7. What are common repair solutions for the P143B code?
Repairs may include recalibrating or replacing the reductant control module, repairing damaged wiring, or updating the ECM software.
8. Can a software update fix the P143B code on a 2016 Chevrolet Silverado?
In some cases, a software update for the ECM or reductant control module may resolve the issue if it’s caused by a programming error.
9. How much does it cost to repair the P143B code?
Repair costs vary but can range from $150 to $800 depending on whether the issue involves wiring repairs, module replacement, or software updates.
10. Do I need special tools to fix the P143B code myself?
Yes, diagnosing and repairing this code typically requires an advanced OBDII scanner capable of communicating with the DEF system and possibly tools for testing or replacing wiring and modules.
Discuss the causes and fixes for P143B 2016 Chevrolet Silverado OBDII Code
Code P143B 2016 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.