2018-2023 Kia Stinger Fuel Pump Control Module: Diagnosis, Location, and Replacement

Symptoms of a Failing Fuel Pump Control Module

When the FPCM begins to fail, it can starve the engine of fuel intermittently or completely. The symptoms can sometimes be mistaken for a bad fuel pump. Look for these specific warning signs:

• Engine Stalling: The engine may stall unexpectedly while driving or when stopped at idle. It might restart after a few minutes as if nothing happened, only to stall again later. This happens when the module overheats or has an internal fault, cutting power to the fuel pump.
• Hard Start or No-Start: You may find the engine cranks but refuses to start, or takes much longer than usual to fire up. A faulty FPCM may not be sending the signal to the fuel pump to 'prime' the system when you turn the key. You might notice the faint humming sound from the fuel pump is absent when you first turn the ignition on.
• Hesitation and Power Loss: During acceleration, the vehicle may hesitate, jerk, or feel sluggish. This indicates the module isn't commanding the fuel pump to increase its speed to meet the engine's demand for more fuel.
• Check Engine Light: A failing FPCM will often trigger a Check Engine Light.

Common OBD-II Trouble Codes

If you have a Check Engine Light, scanning for codes is the first step. Codes related to an FPCM issue include:

• P025C - Fuel Pump Module Control Circuit Low: This code points directly to a problem with the FPCM or its wiring, indicating the control circuit is reading a lower-than-expected voltage.
• P0087 - Fuel Rail/System Pressure - Too Low: While this can have several causes, a faulty FPCM is a primary suspect because it directly controls the low-pressure fuel supply. If the module doesn't run the pump correctly, pressure will drop.

Important: Related Fuel System Recalls & TSBs

It is critical to distinguish a Fuel Pump Control Module failure from other known fuel system issues on the Kia Stinger. The symptoms can be very similar. Before replacing any parts, check if your vehicle has had these free recall services performed by a Kia dealer.

• NHTSA Recall 23V-634 (Kia Campaign SC281): This major safety recall affects 2018-2021 Kia Stingers with the 2.0L Turbo engine. The internal plunger in the High-Pressure Fuel Pump (HPFP) can stick, causing fuel over-pressurization and a sudden loss of driving power. The fix involves a dealer inspection, replacement of the HPFP if needed, and an essential Engine Control Unit (ECU) software update.
• Kia Campaign SC198: This recall affects a smaller number of 2020-2021 Stinger models. A plastic burr from manufacturing could block the fuel pump's jet nozzle, leading to insufficient fuel supply and potential loss of power. The fix is an inspection and, if needed, replacement of the jet nozzle housing assembly.

Because symptoms like stalling and power loss overlap, always verify these recalls have been addressed before diagnosing the FPCM.

Buying a Used Fuel Pump Control Module

If you've ruled out other issues and identified the FPCM as the problem, a used OEM module is an excellent, cost-effective option. The FPCM on the Stinger appears to be a reliable part, so a low-mileage used unit should have plenty of life left.

What to Look For:

• Match the Part Number: The only way to guarantee compatibility is to match the OEM part number. The correct number for all 2018-2023 Kia Stingers is 33040-J5000 (or 33040J5000).
• Inspect the Pins: Check the electrical connector pins on the used module. They should be straight, clean, and free of any green or white corrosion.
• Check the Casing: The black plastic housing should be free of cracks, heat damage, or signs of water intrusion. Since this module is located inside the trunk, it is well-protected from the elements, so any damage is a red flag.
• Why Used OEM is a Good Choice: For an electronic controller like this, a used OEM part is often superior to a new, cheap aftermarket alternative. The OEM unit was designed and validated by Kia for the vehicle's specific systems. Aftermarket modules can sometimes have software or firmware quirks that cause unpredictable behavior.

Programming, Installation, and Location

Does the module need to be programmed?

No, programming does not appear to be required. Official Kia service documents for the 2018-2023 Stinger do not list programming or VIN-linking as a step for replacing the FPCM. The procedure is to install the new module, connect it, and then use a diagnostic tool to check for and clear any stored trouble codes. While some sellers add a generic "programming required" disclaimer to all electronics, the factory procedure suggests this part is plug-and-play.

Location on Vehicle

The Fuel Pump Control Module is located inside the trunk. You will find it mounted behind the luggage side trim on the right-hand (passenger) side of the vehicle, near the fuel tank area.

Installation Overview

Replacing the module is a straightforward job suitable for a DIYer with basic tools.

1. Disconnect the negative battery terminal.
2. Access the trunk and remove the rear transverse trim and the right-hand side luggage trim panel to expose the module.
3. Disconnect the single electrical connector from the FPCM.
4. Remove the mounting nuts that secure the module to the vehicle body.
5. Install the new module and tighten the nuts.
6. Reconnect the electrical connector and reinstall the trunk trim panels.
7. Reconnect the battery, start the vehicle to verify the repair, and clear any lingering DTCs with a scan tool.

Cost to Replace a Kia Stinger FPCM

The cost for this repair is relatively low, especially if you use a recycled OEM part.

Frequently Asked Questions (FAQ)