2019-2020 Kia Sorento Fuel Pump: Leaks, Stalling, and Warranty Explained
Diagnose stalling, hard starts, and fuel smells, and learn about the critical fuel pump warranty extension for 2019 Sorento models.
- A known defect can cause the fuel pump port to crack and leak fuel on 2019 models; Kia has a 15-year/unlimited-mile warranty extension (WTY033) to cover this specific repair.
- Symptoms of failure include engine stalling, hard starting, loss of power, and a whining noise from the rear of the vehicle.
- This in-tank low-pressure pump is different from the engine-mounted high-pressure fuel pump (HPFP), which has its own separate issues and warranty extensions.
- When buying a used unit, carefully inspect the electrical connector for melting and the plastic outlet port for any signs of cracks or leaks.
Known Issues: Fuel Leaks and Warranty Extension (TSB FUE064)
For 2019 Kia Sorento owners, the most significant issue to be aware of is a known defect with the low-pressure fuel pump module. Kia issued Technical Service Bulletin (TSB) FUE064, which addresses a problem where the fuel pump's outlet port can develop cracks over time, especially after prolonged exposure to high temperatures. This can lead to a dangerous fuel leak.
Warning: A fuel leak creates a significant fire risk. If you smell gasoline inside or around your vehicle, stop driving and have it inspected immediately.
In response to this issue, Kia launched the 'Fuel Pump Warranty Extension Program' (WTY033). This extends the warranty coverage for the low-pressure fuel pump to 15 years with unlimited miles for affected 2018-2019 Sorento models. If your vehicle develops a fuel leak at the pump port, a Kia dealer will perform the repair, which typically involves replacing the upper fuel pump module, free of charge under this program. This TSB specifically covers Sorento models built between March 31, 2017, and July 24, 2019.
Low-Pressure vs. High-Pressure Fuel Pump
It is crucial to distinguish between the in-tank low-pressure fuel pump module (this part) and the engine-mounted high-pressure fuel pump (HPFP). The 2019-2020 Sorento has both. While they can cause similar symptoms like stalling, they are different parts with separate warranty extensions. The HPFP warranty extension primarily covers the 3.3L V6 engine and is often associated with diagnostic trouble code P0088 (Fuel Rail/System Pressure Too High). This article focuses on the low-pressure module inside the fuel tank.
Symptoms of a Failing Fuel Pump Module
A failing fuel pump rarely dies without warning. Look out for these common symptoms:
- Engine Stalling: The engine may stall unexpectedly while driving or at idle. This can be intermittent at first and may be more common under load, such as when accelerating or climbing a hill.
- Hard Starting or No Start: The engine may crank for an extended period before starting, or it may crank but fail to start at all. This happens because the pump isn't providing enough initial fuel pressure.
- Loss of Power and Hesitation: You may notice the vehicle feels sluggish, hesitates, or sputters when you press the accelerator.
- Whining Noise from Rear Seat Area: A noticeable high-pitched whining or humming sound coming from the fuel tank area (under the rear seats) is a classic sign of a struggling fuel pump motor.
- Inaccurate or Erratic Fuel Gauge: Since the sending unit is part of the assembly, a failing module can cause the fuel gauge to read empty when full, full when empty, or jump around randomly.
- Check Engine Light: A failing pump can trigger the Check Engine Light. A common related trouble code is P0087 (Fuel Rail/System Pressure - Too Low).
- Fuel Smell: Specific to the issue covered by TSB FUE064, a distinct gasoline smell is a major red flag indicating a potential leak from the pump's housing.
Buying a Used Fuel Pump Module Assembly
A recycled OEM fuel pump module can be a reliable and cost-effective alternative to expensive new parts, especially when compared to lower-quality aftermarket options. Here’s what to check before buying:
- Verify Compatibility: This is the most important step. While part number 31120-C6250 fits a range of 2016-2020 Sorento models with the 2.4L and 3.3L engines, you must confirm the part you are buying is correct for your specific vehicle's year, engine, and drivetrain (FWD/AWD). Always match the part number from your old unit if possible.
- Inspect the Fuel Port: Given the known issue with cracking, carefully inspect the plastic housing, especially around the fuel line outlet port. Look for any hairline cracks, discoloration, or signs of previous leaks or repairs. This is the area addressed by TSB FUE064.
- Check the Electrical Connector: Examine the electrical connector pins and the plastic surrounding them. Any signs of melting, charring, or corrosion are major red flags indicating the old pump was drawing too much current and overheating. Do not buy a unit with a damaged connector.
- Look at the Strainer: The filter sock at the bottom of the pump should be relatively clean. If it's black or full of heavy sediment, it suggests the pump came from a vehicle with a contaminated fuel tank, which could have stressed the pump motor.
- Consider Mileage: Lower mileage is always better. A pump from a low-mileage vehicle has more service life remaining. Avoid pumps from high-mileage vehicles (over 150,000 miles) unless your budget is extremely limited.
Pro Tip: Choosing a used OEM module is often safer than a cheap new aftermarket unit. Aftermarket pumps are notorious for premature failure, incorrect fuel gauge readings, and noisy operation. A genuine Kia part was designed and tested specifically for your vehicle's electrical and fuel systems.
Cost Comparison
Prices for a 2019-2020 Kia Sorento fuel pump module assembly can vary significantly. Here is a general cost breakdown:
| Part Type | Estimated Price Range |
|---|---|
| New OEM (Dealer) | $425 - $650 |
| New Aftermarket | $120 - $320 |
| Used OEM (Recycled) | $175 - $275 |
| Shop Labor | $120 - $180 |
Replacement Overview
Replacing the fuel pump module is a moderately difficult job that can be done by an experienced DIYer. The key challenges are working safely with gasoline and accessing the pump.
- Difficulty: 4 out of 5
- Estimated Time: 2-3 hours
- Location: The pump is accessed through a service panel under the second-row seats. In most cases, the driver's side or split-folding rear seat must be unbolted and removed to access the cover.
Warning: Working with fuel is dangerous. Always disconnect the battery, work in a well-ventilated area, and have a fire extinguisher rated for gasoline fires nearby. Do not create sparks or use open flames. Relieve fuel system pressure before disconnecting any lines.
Basic Steps:
- Disconnect the negative battery terminal.
- Relieve the fuel system pressure by running the engine with the fuel pump fuse or relay removed until it stalls.
- Remove the second-row seat assembly to gain access to the fuel pump service cover.
- Remove the screws and lift off the metal service cover.
- Thoroughly clean the top of the pump and the surrounding area to prevent dirt from falling into the tank.
- Disconnect the electrical connector and the fuel lines.
- Unscrew the plastic locking ring that holds the pump module in place. This may require a special tool, or can sometimes be done carefully with a brass punch and hammer.
- Carefully lift the old pump assembly out of the tank, being mindful not to bend the fuel level float arm.
- Install the new pump with a new tank seal, ensuring the float arm moves freely. Installation is the reverse of removal.
Frequently Asked Questions (FAQ)
Can I just replace the pump motor instead of the whole assembly?
While it is sometimes possible to buy just the internal pump motor, it is not recommended. The module is sold as a complete, sealed unit for a reason. Replacing only the motor requires disassembling the module, which can be difficult and risks damaging the plastic housing or sending unit. Furthermore, the filter and sending unit on your old assembly are likely worn and should be replaced anyway.
My fuel gauge is inaccurate after replacing the pump. What's wrong?
This is a common issue, especially with cheap aftermarket pumps. It can happen for two reasons: either the float arm was bent or damaged during installation, or the new sending unit's resistor does not have the correct range for your vehicle's gauge. If you used an OEM or quality recycled OEM part, the float arm was likely damaged. If you used a low-cost aftermarket part, the sending unit itself is likely the problem.
Is the fuel pump issue on my 2019 Sorento covered by a recall?
It's not a formal recall, but it is covered by a warranty extension (WTY033) for the specific issue of the fuel pump port cracking and leaking. This means Kia will repair it for free for 15 years/unlimited miles if it fails in that specific way. Other failure modes, like a simple worn-out motor, would not be covered outside the standard warranty period.
Do I need to drain the fuel tank to replace the pump?
No, you do not need to drain the tank. The pump is accessed from the top. However, it is much safer and cleaner to perform this job when the fuel tank is less than 1/4 full. A full tank increases the risk of spills and exposure to fumes.
Technical Specifications
OEM Part Numbers: 31120-C6250 31120C6250 31120C6200
Fits 2019-2020 Kia Sorento with 2.4L 4-Cylinder and 3.3L V6 gasoline engines. This is the complete in-tank low-pressure fuel pump module assembly, including the pump, filter, and fuel level sending unit.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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