P143A 2016 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 2016 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 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P143A 2016 Chevrolet Silverado?
- Faulty Reductant Control System
How to Fix the DTC P143A 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 P143A 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.
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Frequently Asked Questions about P143A 2016 Chevrolet Silverado Code
1. What does the OBDII code P143A mean on a 2016 Chevrolet Silverado?
P143A indicates an issue with the Reductant Control System, specifically that the diagnostic signal message counter is incorrect, often related to the diesel exhaust fluid (DEF) system.
2. What are the common symptoms of code P143A in a 2016 Chevrolet Silverado?
Common symptoms include the check engine light turning on, potential DEF system warnings, and possible reduced engine performance or limp mode activation.
3. What causes the P143A code to appear in a 2016 Chevrolet Silverado?
The code can be caused by a communication error between the engine control module (ECM) and the reductant control module, a malfunctioning reductant control module, damaged wiring, or a software glitch.
4. Can I drive my 2016 Chevrolet Silverado with a P143A code?
While the truck may still be drivable, ignoring the issue could lead to reduced performance or limp mode. It’s best to address the problem promptly to avoid further complications.
5. How can I diagnose the P143A code on my Silverado?
Diagnosis involves scanning for codes with an OBDII scanner, inspecting the wiring and connections between the ECM and reductant control module, and checking for software updates or module malfunctions.
6. How do I fix the P143A code on a 2016 Chevrolet Silverado?
Repairs may include updating the ECM software, repairing or replacing damaged wiring, or replacing the reductant control module if it’s found to be faulty.
7. Does the P143A code mean there’s an issue with the DEF fluid itself?
Not necessarily. The issue is more likely related to the communication or control system for the DEF system rather than the fluid itself.
8. Is the P143A code covered under warranty for a 2016 Chevrolet Silverado?
It depends on the truck's mileage and warranty terms, but emissions-related components may be covered under an extended emissions warranty. Check with your dealership.
9. Can a low battery cause the P143A code in a 2016 Chevrolet Silverado?
A weak or low battery can sometimes cause communication errors in the control modules, potentially triggering codes like P143A.
10. Should I clear the P143A code to see if it comes back?
Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the problem is likely to return. Proper diagnosis and repair are recommended.
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