17040 Fuel Pump: The Complete Guide to Symptoms, Diagnosis, and Replacement
What Is the 17040 Fuel Pump?
The 17040 fuel pump is an OEM-style in-tank electric fuel pump assembly used primarily in Nissan and Infiniti vehicles. The part number "17040" refers to the lookup code for the fuel pump assembly in Nissan's parts catalog system. Depending on the specific vehicle model, there are multiple variations of this pump, including 17040-ZQ60C, 17040-ZZ00A, 17040-JE20D, 17040-EB80C, and others.
The 17040 fuel pump assembly is a complete unit that includes several key components working together: the electric fuel pump itself, a fuel strainer/filter, a fuel pressure regulator, a fuel level sending unit (float and resistor), electrical connectors and wiring, and all necessary hoses and seals. This integrated design makes it a direct replacement for the original factory part, meaning you can simply remove the old unit and install the new one without any modifications.
Which Vehicles Use the 17040 Fuel Pump?
The 17040 fuel pump is used across a wide range of Nissan and Infiniti models. Here are the most common applications:
Nissan Armada (2006-2015) – Uses part number 17040-ZQ60C. Fits LE, Platinum, SE, SV, and other trims with the 5.6L VK56DE V8 engine.
Nissan Titan (2006-2015) – Same part number 17040-ZQ60C. Fits LE, PRO-4X, S, SE, SV, XE trims with the 5.6L V8 engine.
Nissan Frontier (2005-2021) – Uses part number 17040-ZZ00A. Fits 4-cylinder 2.5L and 6-cylinder 4.0L engines across LE, PRO-4X, S, SV, and XE trims.
Nissan Pathfinder (2005-2020) – Multiple versions exist. The 17040-ZZ00A fits 2005-2012 models with the 4.0L V6 engine, while the 17040-EB80C fits 2013-2020 R52 models with the 3.5L V6 engine.
Nissan Xterra (2005-2015) – Uses 17040-ZZ00A. Fits all trims with the 4.0L VQ40DE V6 engine.
Nissan Rogue / Rogue Select (FWD) – Uses part number 17040-JM00D. Replaces earlier versions 17040-JM00A, 17040-JM00B, and 17040-JM00C.
Nissan Altima (2013-2018) – Uses part number 17040-3TA0D. Fits 2.5L 4-cylinder and 3.5L V6 models.
Nissan Maxima (2007-2014) and Altima Hybrid (2007-2011) – Uses part number 17040-ZX01B, which includes the fuel gauge sending unit.
Nissan Versa (2012-2019) and Versa Note (2014-2019) – Uses part number 17040-3AN0E. Fits 1.6L 4-cylinder engines.
Nissan X-Trail (T31, 2008-2013) and Qashqai (J10, 2008-2015) – Uses part number 17040-JE20D.
Infiniti FX35/FX45 (2003-2007) – Uses part number 17040-CG000, which has been replaced by 17040-CG00B.
Infiniti FX35/FX37/FX50 and QX70 (2009-2016) – Uses part number 17040-1CB0D, replacing 17040-1CB0A, 17040-1CB0C, and 17040-1CJ0C.
Symptoms of a Failing 17040 Fuel Pump
A failing fuel pump will show clear warning signs before it completely fails. Recognizing these symptoms early can save you from being stranded on the side of the road. The most common symptoms include:
1. Engine Sputtering at High Speeds. If your vehicle hesitates or sputters when you accelerate, especially at highway speeds, the fuel pump may not be delivering enough fuel to maintain proper pressure. This is often one of the first signs of a weakening pump.
2. Difficulty Starting. A failing fuel pump cannot build up sufficient pressure in the fuel system. This results in extended cranking before the engine fires up, or in some cases, the engine may not start at all.
3. Sudden Power Loss Under Load. If you experience a sudden loss of power when driving uphill, towing, or accelerating hard, the pump is likely struggling to keep up with the engine's fuel demand.
4. Whining Noise from the Fuel Tank. A healthy fuel pump operates quietly. If you hear a loud whining, humming, or buzzing sound coming from the fuel tank area (usually under the rear seat or near the trunk), the pump bearings or internal components are wearing out.
5. Poor Fuel Economy. A failing pump may cause the engine to run rich or lean, both of which reduce fuel efficiency. You may notice a 10-15% drop in miles per gallon.
6. Check Engine Light Illuminated. Common trouble codes associated with fuel pump failure include P0230 (Fuel Pump Primary Circuit Malfunction), P0171 (System Too Lean), and P0087 (Fuel Rail/System Pressure Too Low).
How to Diagnose a 17040 Fuel Pump Problem
Before replacing the fuel pump, it is important to confirm that the pump is actually the problem. Here are the steps to diagnose the issue:
Step 1: Check the Inertia Switch (If Equipped). Some Nissan models have an inertia switch located in the trunk, under the rear seat, or behind a side panel. This switch cuts power to the fuel pump after a collision or heavy impact. Press the reset button to restore power.
Step 2: Perform a Fuel Pressure Test. Connect a fuel pressure gauge to the test port on the fuel rail. Start the engine and compare the reading to the specifications in your owner's manual. The 17040-EB80C, for example, operates in a pressure range of 45-65 PSI. Low pressure confirms the pump is weak or failing.
Step 3: Check for Power at the Pump. If you have access to the pump connector (usually under the rear seat or through an access panel), use a voltmeter to check for power when the ignition is on. If power is present but the pump does not run, the pump is bad.
Step 4: Listen for the Pump Prime. When you turn the ignition key to the "ON" position (without starting the engine), you should hear the fuel pump prime for about 2-3 seconds. If you hear nothing, the pump may have failed.
How to Replace the 17040 Fuel Pump
Replacing the 17040 fuel pump is a job that many experienced DIYers can handle. The general process involves:
Step 1: Relieve Fuel System Pressure. Remove the fuel pump relay from the fuse box (located in the engine bay). Start the engine and let it stall. This releases the pressure in the fuel lines.
Step 2: Disconnect the Battery. Disconnect the negative battery terminal to prevent any electrical shorts or sparks during the repair.
Step 3: Access the Fuel Pump. On most Nissan models, the fuel pump is accessed through the trunk or under the rear seat. Remove the carpet or seat cushion, and you will find an access panel. On some models, you may need to drop the fuel tank.
Step 4: Remove the Old Pump Assembly. Disconnect the electrical connector and fuel lines. Use a hammer and punch to loosen the locking ring counterclockwise. Carefully lift the old pump assembly out of the tank.
Step 5: Install the New Pump Assembly. Install the new 17040 pump assembly with a new O-ring (lubricated in clean gasoline). Tighten the locking ring to the specified torque (typically around 35 Nm). Reconnect the electrical connector and fuel lines.
Step 6: Test the System. Reconnect the battery and prime the pump (turn the key to "ON" for 5 seconds, then off). Check for leaks. Start the engine and verify that the check engine light is off and the vehicle runs smoothly.
Why Choose KEMSO Fuel Pumps for Your Nissan or Infiniti
When it comes time to replace your 17040 fuel pump, you want a part that delivers reliable performance, fits perfectly, and comes with a solid warranty. That is where KEMSO stands out.
KEMSO fuel pumps are designed as high-performance, direct OEM replacements for your vehicle. They are built to match or exceed the specifications of the original equipment, ensuring a proper fit and reliable operation. Compared to your stock OEM fuel pump, KEMSO pumps deliver over 20% more flow at 43 psi, making them an excellent choice whether you are looking for a simple replacement or a performance upgrade.
Every KEMSO fuel pump comes with a lifetime warranty, giving you peace of mind that your investment is protected. Whether you drive a Nissan Altima, Frontier, Sentra, Rogue, Pathfinder, Armada, Titan, or any Infiniti model, KEMSO offers a fuel pump that restores your vehicle's performance and fuel delivery. KEMSO fuel pumps are designed for use with both gasoline and E85/ethanol fuels, and each pump is individually tested for quality control.
To browse the complete selection of KEMSO fuel pumps for your specific vehicle, visit https://www.kemsoracing.com/ and find the perfect replacement for your car, truck, SUV, motorcycle, or ATV/UTV.
Choosing Between OEM and Aftermarket 17040 Fuel Pumps
When replacing your 17040 fuel pump, you have two main options: genuine Nissan/Infiniti OEM parts or high-quality aftermarket replacements like KEMSO. Here is how they compare:
Genuine Nissan 17040-EB80C (OEM): Costs between $220 and $300. Offers pressure accuracy of ±2 PSI tolerance, stainless steel housing, factory-calibrated level sensor, and a lifespan of 100,000 to 150,000 miles.
Generic Aftermarket Pumps: Cost between $80 and $150. However, they often have pressure accuracy of ±10 PSI (risking lean/rich mixture), plastic housing prone to cracking, inconsistent readings from the level sensor, and a lifespan of only 40,000 to 60,000 miles.
KEMSO Aftermarket Pumps: Priced consistently at $79.98 for most models. KEMSO pumps are high-performance direct OEM replacements that deliver over 20% more flow than stock, come with a lifetime warranty, and are made with strict quality control (ISO/TSO standards). Each pump is individually tested before shipment.
Maintenance Tips for Your 17040 Fuel Pump
To extend the life of your new fuel pump, follow these simple maintenance practices:
Replace the in-tank fuel filter or strainer every 60,000 miles.
Use Top Tier gasoline to prevent pump wear from contaminants and deposits.
Avoid driving with less than 1/4 tank of fuel. The fuel in the tank helps cool the electric pump. Running the tank low frequently can cause the pump to overheat and fail prematurely.
Replace the fuel pump relay if you experience intermittent power loss. A faulty relay can mimic a failing pump.
Final Thoughts
The 17040 fuel pump is a critical component in your Nissan or Infiniti vehicle. Recognizing the symptoms of failure—such as hard starts, sputtering, whining noises, and poor fuel economy—can help you address the problem before it leaves you stranded. Diagnosis is straightforward with a fuel pressure test, and replacement is a manageable DIY project for most owners.
When it comes time to replace your fuel pump, choose a reliable option that will deliver years of trouble-free service. For the best combination of performance, price, and warranty coverage, consider KEMSO fuel pumps. Visit https://www.kemsoracing.com/ to find the right 17040 fuel pump for your vehicle and get back on the road with confidence.