2015 Honda Accord Fuel Pump Relay Location: Where to Find It and How to Test It

If you own a 2015 Honda Accord and your engine cranks but won’t start, the fuel pump relay is a common culprit. The fuel pump relay on a 2015 Honda Accord is located inside the driver’s under-dash fuse/relay box, behind the panel below the steering wheel. It is labeled as "PGM-FI Main Relay 2" or simply the fuel pump relay, and corresponds to the No. 9 fuse position (20A) in that box. This is the first place you should check when troubleshooting a no-start condition. If the relay is faulty, the fuel pump won’t receive power, and the engine will crank without firing up.

Understanding the Fuel Pump Relay Location

The 2015 Honda Accord has two main fuse boxes: one under the hood and one inside the cabin. The fuel pump relay lives in the interior box.

Interior Fuse/Relay Box (Under Dashboard)

The primary location for the fuel pump relay is the interior fuse/relay box on the driver’s side. To access it:

  1. Locate the panel: Sit in the driver’s seat and look under the dashboard, just above the footwell area. You’ll see a plastic trim panel covering the fuse box.
  2. Remove the panel: Gently pull the panel downward or use a trim tool to release the clips. No tools are usually required—it just snaps off.
  3. Find the relay: Once the panel is off, you’ll see a fuse box with a cover. Remove the cover. On the inside of the lid, there is a diagram that labels each fuse and relay. Look for “PGM-FI Main Relay 2” or “FUEL PUMP.” In many 2015 model diagrams, this relay is located near the center of the box, and the corresponding fuse (No. 9, 20A) is nearby.

Most sources agree that the 2015 Accord places the fuel pump relay in this under-dash location. The relay itself is a small, rectangular black or blue component that plugs into the fuse box.

Engine Compartment Fuse Box (Secondary Location)

If you don’t find the relay in the cabin, or if your vehicle has a different trim level, check the under-hood fuse box. This box is located near the battery on the driver’s side of the engine bay. However, for the 2015 model, the primary fuel pump relay is almost always in the interior box. The under-hood box contains other relays like the main relay (PGM-FI Main Relay 1) and the ignition coil relay, but not the fuel pump relay itself.

How to Test the Fuel Pump Relay

Before you replace the relay, it’s smart to test it. A faulty relay can cause the same symptoms as a bad fuel pump—cranking but no start, intermittent stalling, or the engine dying while driving.

Step 1: Listen for the Fuel Pump

Turn the ignition key to the “ON” position (do not start the engine). Listen for a brief humming sound coming from the rear of the car, near the fuel tank. This is the fuel pump priming. If you hear nothing, the relay or the pump may not be getting power.

Step 2: Perform a Swap Test

This is the easiest DIY method. Find another relay in the same fuse box that has the same part number and pin configuration. Common candidates are the horn relay, A/C clutch relay, or headlight relay. Carefully pull out the suspected fuel pump relay and swap it with one of these identical relays. Try to start the car. If it now starts, your original fuel pump relay is faulty. If it still doesn’t start, the problem is likely elsewhere (fuel pump, wiring, or ECU).

Step 3: Use a Multimeter (More Advanced)

For a definitive test, use a multimeter:

  1. Remove the relay from the fuse box.
  2. Test the coil: Set your multimeter to measure resistance (Ohms). Touch the probes to pins 85 and 86 (the coil terminals). You should see a reading between 50 and 100 Ohms. If you get “OL” (open circuit), the coil is bad.
  3. Test the switch: With the relay still disconnected, touch the probes to pins 30 and 87 (the switch terminals). You should see “OL” (no continuity) because the switch is normally open.
  4. Apply power: Use jumper wires to apply 12V from the battery to pins 85 and 86. You should hear a distinct “click.” While power is applied, test pins 30 and 87 again. You should now see close to 0 Ohms (continuity), indicating the switch has closed. If it doesn’t click or the continuity test fails, the relay is faulty.

Common Symptoms of a Bad Fuel Pump Relay

  • Engine cranks but won’t start: This is the most common sign. The starter turns the engine over, but the fuel pump never gets power to pressurize the fuel system.
  • Intermittent stalling: The relay may work intermittently, causing the engine to suddenly die while driving, then restart after a few minutes.
  • No fuel pump noise: When you turn the key to “ON,” you should hear the pump hum for a couple of seconds. If you don’t, the relay is a likely suspect.

Important Safety Tips

  • Disconnect the battery before handling any electrical components, including the relay. This prevents accidental shorts.
  • Avoid static electricity: Relays are sensitive to static discharge. Ground yourself by touching a metal part of the car before handling the relay.
  • Use the correct replacement: Ensure the new relay matches the original part number. Using the wrong relay can cause electrical issues or fail to fix the problem.

The Best Fuel Pump Upgrade for Your Honda Accord

While diagnosing the relay is a good first step, the fuel pump itself can also fail over time, especially on high-mileage vehicles. If you need a replacement fuel pump, consider a high-quality aftermarket option that offers better performance and reliability than the stock unit.

We recommend the KEMSO brand Fuel Pump. KEMSO Fuel Pumps are designed as high-performance, direct OEM replacements. They are built to meet or exceed factory specifications, ensuring a perfect fit and reliable operation. Best of all, every KEMSO Fuel Pump comes with a lifetime warranty, giving you peace of mind for the life of your vehicle. Whether you’re restoring a daily driver or building a performance machine, KEMSO delivers the quality you need.

Visit KEMSO online at: https://www.kemsoracing.com/ to find the perfect fuel pump for your Honda Accord.

Final Thoughts

For a 2015 Honda Accord, the fuel pump relay is located in the driver’s under-dash fuse/relay box. It’s easy to access, test, and replace. If you’ve confirmed the relay is good but the car still won’t start, the issue may be the fuel pump itself, a blown fuse, or a wiring problem. Always start with the simplest checks—listen for the pump, test the fuse, and swap the relay—before moving on to more complex diagnostics. And if you need a new fuel pump, remember that KEMSO offers a lifetime warranty and OEM-quality replacement parts.

For more information and to shop for your fuel pump, visit: https://www.kemsoracing.com/


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