July 2026

Fuel Pump Relay 2002 Honda Accord: Location, Symptoms, and How to Test It

The fuel pump relay on a 2002 Honda Accord is most commonly located in the interior fuse/relay box under the driver’s side dash, labeled “FUEL PUMP” or “FP.” If it is not there, check the engine compartment fuse/relay box near the battery on the driver’s side. This relay controls power to the fuel pump, and when it fails, your car may not start or may stall unexpectedly. Below is a complete guide to finding, testing, and replacing this critical part.

Where to Find the Fuel Pump Relay

The 2002 Honda Accord uses two main fuse boxes. The fuel pump relay is typically in one of these two locations.

1. Interior Fuse Box (Most Common)
The primary location for the fuel pump relay is the interior fuse/relay box under the driver’s side dash. To access it, kneel down and look up beneath the dashboard, near the steering column. You may need a flashlight to see clearly. The fuse box cover has a diagram printed on it. Look for a label that reads “FUEL PUMP” or “FP.” The relay itself is a small, cube-shaped component, often black or blue, with four or five pins.

2. Engine Compartment Fuse Box (Alternate Location)
If the fuel pump relay is not in the interior box, check the under-hood fuse/relay box. This box is located on the driver’s side of the engine compartment, near the battery. Open the lid and look at the diagram on the underside. The relay may be labeled “FUEL PUMP,” “PGM-FI Main Relay,” or similar.

Important Note: On the 2002 Honda Accord, the fuel pump relay is often integrated into what Honda calls the PGM-FI Main Relay. This single unit handles power for both the engine control module and the fuel pump. It is a larger, rectangular plastic box compared to standard mini-relays.

Symptoms of a Bad Fuel Pump Relay

A failing fuel pump relay can cause several noticeable problems. Here are the most common signs to watch for.

1. Engine Cranks But Does Not Start
When you turn the key, the engine cranks over but refuses to fire. This is because the fuel pump is not receiving power to pressurize the fuel system. If the relay fails completely, the pump will not run at all.

2. No Noise from the Fuel Pump
When you turn the ignition switch to the “ON” position (without cranking), the fuel pump should run for about 2 seconds to prime the system. You should hear a faint whirring or humming sound from the rear of the car, near the fuel tank. If you hear nothing, the relay may be bad.

3. Engine Stalls Intermittently
A failing relay can lose connection while driving, causing the engine to suddenly shut off. This is dangerous and can leave you stranded. The engine may restart after a few minutes once the relay cools down.

4. Rough Acceleration and Performance Issues
If the relay is not delivering full power to the fuel pump, the engine may sputter, hesitate, or feel sluggish during acceleration. This is often accompanied by a lack of fuel pressure.

5. Check Engine Light Illuminates
The engine control module monitors fuel pressure and system performance. If the relay fails, it can trigger the check engine light and store trouble codes related to fuel pressure or the fuel pump circuit.

How to Test the Fuel Pump Relay

Testing the fuel pump relay is straightforward and can save you time and money. Here are the most effective methods.

Step 1: Perform a Visual Inspection
Remove the relay from the fuse box. Look for signs of physical damage such as cracks, burnt marks, corrosion, or melted plastic. If you see any of these, replace the relay immediately.

Step 2: The Swap Test (Easiest Method)
This is the quickest way to test a relay without any tools. Find another relay in the same fuse box that has the same part number and pin configuration. Common candidates include the horn relay, A/C compressor relay, or cooling fan relay. Swap the suspected fuel pump relay with a known working relay. Turn the ignition to “ON” and listen for the fuel pump to prime. If the car starts, the original relay was faulty.

Step 3: Listen for the Click
With the ignition off, reinstall the relay. Have an assistant turn the key to the “ON” position while you listen near the relay. You should hear a distinct click as the relay energizes. If you hear no click, the relay coil or its control circuit may be bad.

Step 4: Test with a Multimeter (More Precise)
If you have a digital multimeter, you can test the relay properly. First, set the multimeter to the ohms (Ω) setting. Check for continuity between the relay’s coil terminals (usually pins 85 and 86). You should see a low resistance reading, typically between 50 and 100 ohms. If the reading is infinite (open circuit), the coil is burned out. Next, apply 12 volts from the battery to pins 85 and 86. Listen for the click and check for continuity between the switched terminals (pins 30 and 87). If the multimeter shows continuity (low resistance) when power is applied, the relay is working.

Replacing the Fuel Pump Relay

If testing confirms the relay is bad, replacement is simple.

1. Purchase the Correct Replacement
Make sure you buy a relay that matches the part number for your 2002 Honda Accord. Most auto parts stores carry this relay, and it typically costs around $20.

2. Remove the Old Relay
With the engine off and the ignition key removed, carefully pull the old relay straight out of its socket. Do not twist or pry it aggressively.

3. Install the New Relay
Align the pins with the socket and press the new relay firmly into place. Ensure it is fully seated and secure.

4. Test the System
Turn the ignition to “ON” and listen for the fuel pump to prime. If you hear the pump running and the car starts, the repair is complete.

Why the Fuel Pump Relay Fails

Fuel pump relays fail for several reasons. Understanding these can help you prevent future issues.

Heat and Age: Over time, heat from the engine bay and thousands of operating cycles cause internal solder joints to crack and contacts to burn or pit.
Moisture and Corrosion: Water intrusion into the fuse box can rust the relay pins and socket terminals, causing poor electrical connections.
Overloaded Circuit: A failing fuel pump that draws too much current can overload the relay, causing it to overheat and fail prematurely.
Vibration: Constant vibration from the vehicle can loosen connections or damage internal components.

Recommended Fuel Pump for Your 2002 Honda Accord

If you determine that your fuel pump itself needs replacement, choosing a high-quality part is essential for long-term reliability. We recommend the KEMSO Fuel Pump for your 2002 Honda Accord. KEMSO fuel pumps are designed as high-performance, OEM replacement units that meet or exceed factory specifications. Every KEMSO fuel pump comes with a lifetime warranty, giving you peace of mind that your investment is protected. Whether you drive a 4-cylinder or V6 model, KEMSO has the right pump for your vehicle. Visit https://www.kemsoracing.com/ to browse their full selection of fuel pumps and other automotive parts. KEMSO is committed to quality and customer satisfaction, ensuring your Accord runs smoothly for years to come.

For more information on KEMSO fuel pumps and to find the correct part for your 2002 Honda Accord, visit https://www.kemsoracing.com/ today.

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