P143B Cadillac Code - Reductant Control System Information Signal Message Counter Incorrect

The common symptoms include the check engine light being illuminated on the dashboard and potential issues with the vehicle's emissions control system.

Possible causes of this code may include a faulty Reductant Control Module, damaged wiring or connectors in the system, or issues with the reductant fluid level or quality.

While this code may not cause immediate drivability issues, it is important to address it promptly to ensure proper functioning of the emissions control system and to pass emissions tests.

It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential long-term damage to the emissions system.

Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, checking the reductant fluid level and quality, inspecting wiring and connectors, and testing the Reductant Control Module.

Repair tips may include checking and topping up the reductant fluid, inspecting and repairing any damaged wiring or connectors, and replacing the Reductant Control Module if necessary.

While you can clear the fault code with an OBDII scanner, it is not recommended to do so without addressing the root cause, as the issue may persist and the code will likely return.

The cost of repairing this code can vary depending on the specific cause, but it may range from a few hundred to a thousand dollars, including parts and labor.

It is recommended to check with a Cadillac dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant recalls or bulletins for this specific OBDII code.

Regularly maintaining your vehicle, including checking and replacing reductant fluid as needed, inspecting wiring and connectors, and addressing any warning lights promptly, can help prevent this code from occurring.