P14D6 2016 GMC Sierra Code - Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect

The P14D6 code indicates an issue with the Fuel Pump Driver Control Module (FPCM) where the configuration command signal 5 message counter is incorrect, often pointing to a communication or configuration problem.

Symptoms may include engine performance issues, difficulty starting, reduced fuel efficiency, or the illumination of the check engine light.

Common causes include a faulty Fuel Pump Driver Control Module (FPCM), software glitches, wiring issues, or incorrect configuration data within the module.

Driving with the P14D6 code is not recommended, as it may lead to fuel delivery problems and potentially cause the engine to stall or fail to start.

A technician will use a scan tool to check for additional codes, inspect the FPCM and related wiring, verify module communication, and ensure the configuration data is correct.

Repairs may include reprogramming or replacing the Fuel Pump Driver Control Module, repairing damaged wiring or connectors, or updating the vehicle’s software.

Repair costs can vary widely, ranging from $100-$500 or more, depending on whether reprogramming or module replacement is required.

A dead or low battery can potentially disrupt module communication and cause temporary issues, but the root cause is typically related to the FPCM or its configuration.

It may be covered under the powertrain or emissions warranty, but coverage depends on mileage, age, and warranty terms. Check with your dealer for details.

Clearing the code without addressing the issue may temporarily remove the check engine light, but the problem will likely return until the underlying fault is resolved.