P143B GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC P143B GMC?
- Faulty Reductant Control System
How to Fix the DTC P143B GMC?
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 GMC 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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Information for Specific GMC Models
- P143B 2014 GMC Sierra — Reductant Control System Information Signal Message Counter Incorrect
- P143B 2015 GMC Sierra — Reductant Control System Information Signal Message Counter Incorrect
- P143B 2016 GMC Sierra — Reductant Control System Information Signal Message Counter Incorrect
- P143B 2017 GMC Sierra — Reductant Control System Information Signal Message Counter Incorrect
- P143B 2018 GMC Sierra — Reductant Control System Information Signal Message Counter Incorrect
Frequently Asked Questions about P143B GMC Code
1. What are the common symptoms of OBDII code P143B in a GMC vehicle?
- Common symptoms include the Check Engine Light illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.
2. What does the OBDII code P143B GMC indicate?
- The code P143B indicates that the Reductant Control System Information Signal Message Counter is incorrect, signaling a problem with the vehicle's emissions control system.
3. What are the possible causes of OBDII code P143B in a GMC vehicle?
- Possible causes include a faulty Reductant Control Module, issues with the wiring or connectors in the system, or a software glitch in the vehicle's control module.
4. How can I diagnose OBDII code P143B in my GMC vehicle?
- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the Reductant Control System components, and checking for any visible damage or loose connections.
5. Can I continue driving my GMC vehicle with OBDII code P143B present?
- It is not recommended to continue driving the vehicle with this code present, as it can lead to increased emissions, reduced fuel efficiency, and potential damage to the vehicle's catalytic converter.
6. How can I repair OBDII code P143B in my GMC vehicle?
- Repairing this code may involve replacing the Reductant Control Module, repairing any damaged wiring or connectors, or updating the vehicle's control module software to correct the signal message counter.
7. Are there any DIY tips for addressing OBDII code P143B in a GMC vehicle?
- While some basic diagnostics can be done at home, it is recommended to seek professional help when dealing with this code to ensure proper diagnosis and repair.
8. Will resetting the Check Engine Light resolve OBDII code P143B in my GMC vehicle?
- Simply resetting the Check Engine Light may temporarily clear the code, but it will not address the underlying issue causing the incorrect Reductant Control System Information Signal Message Counter.
9. How much does it typically cost to repair OBDII code P143B in a GMC vehicle?
- The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. Can OBDII code P143B cause my GMC vehicle to fail an emissions test?
- Yes, if left unresolved, OBDII code P143B can cause the vehicle to fail an emissions test due to increased emissions and improper operation of the Reductant Control System.
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