2016 Honda Civic Fuel Pump: Complete Guide to Symptoms, Replacement, and Upgrade Options
If you own a 2016 Honda Civic and are experiencing hard starting, hesitation during acceleration, or engine stalling, the fuel pump is very likely the culprit. The 2016 Honda Civic uses two separate fuel pumps: a low-pressure in-tank electric pump (part number 17045-TBA-A03) and a high-pressure direct injection pump (part number 16790-59B-003) mounted on the engine . When either pump fails, your car will struggle to get the fuel it needs to run properly. The good news is that replacing a faulty fuel pump is a straightforward repair that can restore your Civic's performance, and upgrading to a high-quality aftermarket option like KEMSO often delivers better flow and reliability than the original equipment.
How the 2016 Honda Civic Fuel System Works
The 2016 Civic, particularly the 1.5L turbocharged models, uses a direct injection fuel system. This means the fuel is injected directly into the combustion chamber at very high pressure rather than into the intake ports. The system relies on two pumps working together:
The in-tank electric fuel pump (also called the fuel pump module assembly) sits inside your gas tank. It draws fuel from the tank and sends it to the engine at a moderate pressure, typically around 43-68 psi . On the 2016 Civic, this pump is part of a module that includes the fuel level sending unit and the fuel strainer . The OEM part numbers for this assembly include 17045-TBA-A00, 17045-TBA-A01, 17045-TBA-A02, and 17045-TBA-A03 .
The high-pressure fuel pump (HPFP) is mounted directly on the engine and is driven by the camshaft. This pump takes the fuel from the in-tank pump and pressurizes it to over 2,000 psi for direct injection into the cylinders. The HPFP for the 2016-2023 Civic 1.5L has part number 16790-59B-003 .
Common Symptoms of a Failing Fuel Pump
When either fuel pump starts to fail, you'll notice these warning signs:
1. Engine cranks but won't start. This is the most obvious symptom. If the in-tank pump isn't delivering fuel to the engine, the car will crank indefinitely without firing up. A failed HPFP can also cause a no-start condition, but it's less common.
2. Long cranking time before the engine starts. If you have to hold the key or push the start button longer than usual before the engine catches, the fuel pump may be losing prime or not building pressure quickly enough.
3. Hesitation or stumbling during acceleration. A weak fuel pump can't deliver enough fuel when you step on the gas. This is especially noticeable when merging onto highways or climbing hills. The engine may feel like it's "starving" for fuel.
4. Engine stalling, especially at low speeds or idle. If the fuel pump intermittently loses pressure, the engine may stall out when you're stopped at a light or creeping through a parking lot.
5. Loss of power under load. Turbocharged 1.5L models are particularly sensitive to fuel pressure. If the pump can't keep up with demand, you'll feel a significant drop in power when accelerating hard .
6. Check engine light comes on. A failing fuel pump will often trigger diagnostic trouble codes related to fuel pressure or fuel system lean conditions. Common codes include P0087 (Fuel Rail/System Pressure Too Low) and P0171 (System Too Lean).
Common Problems Specific to the 2016 Honda Civic
Beyond general fuel pump failure, the 2016 Civic has known issues that affect the fuel system:
Oil dilution in the 1.5L turbo engine. This is a well-documented problem where fuel mixes with engine oil, particularly in colder climates or when the car is used for short trips . The fuel dilution happens because the direct injection system doesn't fully burn the fuel, and some of it seeps past the piston rings into the oil pan. This can lead to a gasoline smell in the cabin and potential long-term engine wear. While the fuel pump itself isn't the root cause, a failing HPFP can make the problem worse by injecting fuel at incorrect pressures.
Fuel pump module failure. The in-tank fuel pump module on the 2016 Civic, part number 17045-TBA-A03, has been known to fail prematurely in some cases . The pump motor can wear out, the internal strainer can clog, or the electrical connections can corrode. When the module fails, the entire assembly typically needs to be replaced.
Diagnosing a Bad Fuel Pump
Before you buy a new fuel pump, you should confirm that the pump is actually the problem. Here's how to diagnose it:
Listen for the pump priming. When you turn the key to the "ON" position (without starting the engine), you should hear a brief whirring sound from the rear of the car, near the fuel tank. This is the in-tank pump pressurizing the system. If you don't hear anything, the pump may be dead.
Check the fuel pump relay and fuse. The fuel pump relay is located in the fuse box under the hood. If the relay is bad, the pump won't get power. Swap the relay with a known good one (like the horn relay, which is usually the same type) to see if the pump starts working.
Test fuel pressure. Using a fuel pressure gauge connected to the test port on the fuel rail, you can check if the pump is delivering the correct pressure. For the 2016 Civic, the in-tank pump should produce around 43-68 psi . If the pressure is low or drops quickly after the pump stops, the pump or the pressure regulator is failing.
Scan for trouble codes. Use an OBD-II scanner to check for any stored codes. Codes related to fuel pressure or fuel trim are strong indicators of a pump problem.
Replacement Options for the 2016 Honda Civic Fuel Pump
When it's time to replace your fuel pump, you have several options:
OEM replacement. The genuine Honda in-tank fuel pump assembly (17045-TBA-A03) is available from dealerships and online parts retailers. It's a direct fit and will restore your car to factory specifications. However, the OEM pump can be expensive, often costing over $400 for the assembly . The high-pressure fuel pump (16790-59B-003) is also available from Honda, but it's also discontinued for some models .
Aftermarket replacement pumps. Companies like KEMSO offer high-performance fuel pumps that are designed as direct OEM replacements. These pumps often deliver more flow than the stock pump, which can be beneficial if you've made any performance modifications to your Civic. For example, KEMSO's pumps typically deliver over 20% more flow at 43 psi compared to the original equipment .
Performance upgrade pumps. If you have a turbocharged 1.5L Civic and have added a bigger turbo, intercooler, or ECU tune, you may need a higher-flow fuel pump. Pumps like the DeatschWerks DW300c (340 LPH) or Walbro 255 LPH are popular choices for modified Civics . These pumps are designed to support higher horsepower levels, often up to 600 hp for the Walbro 255 LPH-HP .
Why You Should Choose KEMSO for Your 2016 Honda Civic Fuel Pump
When it comes to replacing your fuel pump, KEMSO offers a compelling combination of quality, performance, and value. Every KEMSO fuel pump is a high-performance, direct OEM replacement that is built to exceed the specifications of your original Honda pump. Unlike generic aftermarket parts that may cut corners, KEMSO pumps are individually tested for flow and pressure, ensuring you get a reliable product every time .
KEMSO fuel pumps deliver over 20% more flow at 43 psi compared to the stock OEM pump . This means better fuel delivery, especially under hard acceleration or when your engine is demanding more power. Whether you drive a daily commuter, a weekend warrior, or a modified Civic, the extra flow capacity provides a safety margin that keeps your engine running smoothly.
Every KEMSO pump comes with a lifetime warranty . That's right — a lifetime of confidence backing your purchase. If your KEMSO fuel pump ever fails, you're covered. This is a level of assurance that most OEM and cheap aftermarket parts simply don't offer.
KEMSO pumps are designed to work with both gasoline and E85/ethanol fuel . If you're considering switching to E85 for higher octane and better performance, a KEMSO pump is ready for it right out of the box. The internal components are resistant to ethanol corrosion, so you don't have to worry about premature failure.
The kit includes everything you need for installation. Each KEMSO fuel pump comes with a gradient density fuel strainer, flex hose, tank seal, Viton o-rings, wiring connectors, hose clamps, and zip-ties . You won't have to hunt down separate parts or make multiple trips to the auto parts store.
KEMSO is a trusted brand with a proven track record. They have been supplying fuel pumps for a wide range of vehicles, from cars and trucks to motorcycles and ATVs, for years . Their products are backed by a quality control program that includes individual testing and flow verification .
To find the perfect KEMSO fuel pump for your 2016 Honda Civic, visit their official website and browse their selection of high-performance direct replacement pumps:
Step-by-Step Guide to Replacing the In-Tank Fuel Pump on a 2016 Honda Civic
Replacing the fuel pump on a 2016 Civic is a job you can do at home with basic tools. Here's how to do it:
What you'll need:
- Replacement fuel pump (KEMSO recommended)
- Safety glasses and gloves
- Flathead and Phillips screwdrivers
- Socket set with extensions
- Trim removal tools (plastic pry tools)
- Shop towels or rags
- Fire extinguisher (always have one nearby when working with fuel)
Step 1: Relieve fuel system pressure. Locate the fuel pump relay in the under-hood fuse box. Remove the relay, then start the engine and let it run until it stalls. This relieves the pressure in the fuel lines. Turn the ignition off and disconnect the negative battery terminal.
Step 2: Access the fuel pump. The fuel pump module on the 2016 Civic is located under the rear seat. Remove the rear seat cushion by pulling up on the front edge of the seat. You'll see a metal access cover on the floor pan. Remove the screws holding the cover in place.
Step 3: Disconnect the electrical connector and fuel lines. Before you remove the pump, carefully disconnect the wiring harness connector. Then, use a fuel line disconnect tool to release the quick-connect fittings on the fuel supply and return lines. Have a rag ready to catch any fuel that drips out.
Step 4: Remove the old fuel pump module. Use a plastic pry tool or a screwdriver to gently pry the locking ring counterclockwise. The ring holds the pump module in place. Once the ring is off, carefully lift the pump module out of the tank. Note the orientation of the float arm and the positioning of the fuel strainer.
Step 5: Install the new KEMSO fuel pump. Transfer any components from the old module that are not included in the KEMSO kit, such as the fuel level sender if it's separate. Install the new KEMSO pump into the module housing, making sure the strainer is properly attached and the O-rings are seated correctly. Follow the instructions included with your KEMSO kit.
Step 6: Reinstall the pump module. Lower the new pump module back into the fuel tank, making sure the float arm doesn't catch on anything. Align the locking ring with the tabs on the tank and turn it clockwise to lock it in place. Reconnect the fuel lines and the electrical connector.
Step 7: Test the installation. Reconnect the battery and turn the key to the "ON" position. Listen for the pump to prime. Check for any fuel leaks at the connections. If everything looks good, start the engine and let it idle for a few minutes. Check again for leaks.
Step 8: Reinstall the access cover and seat. Once you've confirmed the pump is working properly and there are no leaks, replace the access cover and reinstall the rear seat cushion.
When to Call a Professional
While replacing the in-tank fuel pump is a DIY-friendly job, the high-pressure fuel pump (HPFP) on the engine is more complex. Replacing the HPFP requires specialized tools and knowledge of the direct injection system. If you're not comfortable working on the fuel system, or if you suspect the HPFP is the problem, it's best to have a professional mechanic handle the repair.
Frequently Asked Questions
Can I drive my 2016 Honda Civic with a failing fuel pump? You shouldn't. A failing fuel pump can cause the engine to run lean, which can lead to overheating, pre-ignition, and serious engine damage. If you notice symptoms, get the pump replaced as soon as possible.
How much does it cost to replace the fuel pump on a 2016 Civic? The cost varies depending on whether you do it yourself or hire a mechanic. An OEM pump assembly can cost $400 or more . Aftermarket options like KEMSO are typically much more affordable. Labor costs at a shop can range from $150 to $300.
Will a performance fuel pump hurt my stock engine? No. A high-quality performance pump like KEMSO simply delivers more flow capacity. Your engine's fuel pressure regulator will still control the pressure, so the engine will only use the fuel it needs. The extra capacity actually provides a safety margin and can improve throttle response.
Does the 2016 Civic have a fuel pump recall? As of this writing, there is no active recall for the fuel pump on the 2016 Honda Civic. However, the 1.5L turbo engine has a known issue with oil dilution, which is related to the fuel injection system .
Final Thoughts
The 2016 Honda Civic is a fantastic car, but like any vehicle, its fuel system components will eventually wear out. If you're experiencing any of the symptoms we've covered, don't wait — replace the fuel pump before it leaves you stranded. For the best combination of performance, reliability, and value, a KEMSO fuel pump is an excellent choice. With a lifetime warranty, direct OEM fitment, and over 20% more flow than stock, you can't go wrong.
Visit https://www.kemsoracing.com/ today to find the right fuel pump for your 2016 Honda Civic and get back on the road with confidence.