P143B 2015 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 2015 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 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC P143B 2015 Chevrolet Silverado?
- Faulty Reductant Control System
How to Fix the DTC P143B 2015 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 2015 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 2015 Chevrolet Silverado code?
Need more information on how to fix the P143B 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals
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Frequently Asked Questions about P143B 2015 Chevrolet Silverado Code
1. What does OBDII code P143B mean on a 2015 Chevrolet Silverado?
P143B indicates an issue with the reductant control system, specifically that the information signal message counter is incorrect or invalid.
2. What are the common symptoms of code P143B in a 2015 Chevrolet Silverado?
Symptoms may include the check engine light turning on, poor DEF (Diesel Exhaust Fluid) system performance, or potential issues with emissions compliance.
3. What causes the P143B code to appear in a 2015 Chevrolet Silverado?
Common causes include faulty reductant control module software, wiring or connector issues in the reductant system, or a malfunctioning reductant control module.
4. Can a faulty Diesel Exhaust Fluid (DEF) quality sensor trigger the P143B code?
Yes, a failing DEF quality sensor can sometimes cause communication errors that lead to the P143B code.
5. How do I diagnose the P143B code on my 2015 Chevrolet Silverado?
Diagnosis involves using an OBDII scanner to verify the code, inspecting the wiring and connectors in the reductant control system, and testing the reductant control module for proper communication and operation.
6. Is it safe to drive with a P143B code on my 2015 Chevrolet Silverado?
While the vehicle may still be drivable, ignoring this code could lead to increased emissions or potential DEF system failures, so it’s best to address it promptly.
7. How can I fix the P143B code on my 2015 Chevrolet Silverado?
Repairs may include updating the reductant control module software, repairing damaged wiring or connectors, or replacing the reductant control module if faulty.
8. Will clearing the P143B code solve the problem permanently?
Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.
9. Can a low DEF level cause the P143B code?
While low DEF levels typically trigger other specific codes, maintaining proper DEF levels is essential to avoid related system issues.
10. Should I take my Silverado to a professional for the P143B code?
If you’re unable to diagnose or repair the issue yourself, consulting a professional mechanic with experience in diesel systems is recommended.
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