P143A 2017 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 2017 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 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P143A 2017 Chevrolet Silverado?
- Faulty Reductant Control System
How to Fix the DTC P143A 2017 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 2017 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 P143A 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P143A 2017 Chevrolet Silverado Code
1. What does the OBDII code P143A mean on a 2017 Chevrolet Silverado?
P143A indicates an issue with the reductant control system, specifically that the diagnostic signal message counter is incorrect or not functioning as expected.
2. What are the common symptoms of the P143A code?
Symptoms may include a check engine light, DEF (Diesel Exhaust Fluid) system warnings, reduced engine power, or issues with emissions system performance.
3. What causes the P143A code on a 2017 Chevrolet Silverado?
Common causes include faulty reductant control module programming, wiring or connector issues, or a malfunctioning reductant control module.
4. Can driving with a P143A code damage my 2017 Chevrolet Silverado?
While driving with this code may not cause immediate damage, it can lead to emissions system issues or reduced engine performance if not addressed promptly.
5. How is the P143A code diagnosed?
A mechanic will use a scan tool to retrieve the code, inspect the reductant control module circuitry, and check for related wiring or communication issues in the DEF system.
6. Can a software update fix the P143A code?
In some cases, updating the reductant control module software can resolve the issue, especially if the problem is due to a known programming error.
7. What parts might need replacement to fix the P143A code?
Parts that may need replacement include the reductant control module, wiring harness, or connectors associated with the DEF system.
8. How much does it typically cost to repair a P143A code?
Repair costs can vary but may range from $150 to $500 depending on whether the issue is a wiring repair, software update, or module replacement.
9. Can I clear the P143A code without repairing the problem?
Clearing the code without addressing the root cause may result in the code returning and potential performance or emissions issues persisting.
10. Is the P143A code related to the DEF system in my Silverado?
Yes, the P143A code is directly related to the Diesel Exhaust Fluid (DEF) system and its ability to properly control emissions.
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