P143B 2016 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 2016 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 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P143B 2016 Chevrolet Silverado?
- Faulty Reductant Control System
How to Fix the DTC P143B 2016 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 2016 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 2016 Chevrolet Silverado code?
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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.
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