P143B 2014 Chevrolet Silverado Code - Reductant Control System Information 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
- P143B 2014 Chevrolet Silverado indicates Reductant Control System Information 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 P143B 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P143B 2014 Chevrolet Silverado?
- Faulty Reductant Control System
How to Fix the DTC P143B 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 P143B 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 P143B 2014 Chevrolet Silverado code?
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Frequently Asked Questions about P143B 2014 Chevrolet Silverado Code
1. What does the OBDII code P143B mean on a 2014 Chevrolet Silverado?
P143B indicates an issue with the reductant control system, specifically that the information signal message counter is incorrect, which may affect the diesel exhaust fluid (DEF) system.
2. What are the common symptoms of code P143B on a Chevrolet Silverado?
Symptoms may include a check engine light, DEF system warning messages, reduced engine performance, or a possible limp mode activation.
3. What causes the P143B code to appear on a 2014 Chevrolet Silverado?
The code is typically caused by issues like faulty reductant control module communication, a software glitch, damaged wiring, or a failing reductant control module.
4. Can a bad reductant control module cause the P143B code?
Yes, a malfunctioning reductant control module is one of the main causes of this code, as it may fail to send the proper signal message count.
5. How do you diagnose the P143B code on a Chevrolet Silverado?
Diagnosis involves scanning for codes, inspecting wiring and connectors for damage or corrosion, testing the reductant control module, and verifying module communication using a diagnostic scan tool.
6. Can a software update fix the P143B code on a 2014 Silverado?
Yes, in some cases, a software update from the manufacturer may resolve communication issues causing the code.
7. Is it safe to drive with code P143B active on a Chevrolet Silverado?
It’s not recommended to drive for extended periods with this code active, as it may lead to reduced engine performance or further DEF system issues.
8. How much does it cost to repair the P143B code on a 2014 Chevrolet Silverado?
Repair costs can range from $100 to $1,000 depending on whether the issue is minor, like fixing a wiring problem, or major, such as replacing the reductant control module.
9. What tools are needed to resolve the P143B code?
A diagnostic scan tool capable of reading and clearing OBDII codes, along with a multimeter for testing wiring, are essential tools for diagnosing and fixing this issue.
10. Can a DIYer fix the P143B code on their Silverado?
A skilled DIYer with the right tools and knowledge of the DEF system may be able to resolve the code by inspecting wiring and performing basic repairs, but module programming or software updates typically require professional assistance.
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