2009 Honda Accord Fuel Pump Relay Location: Complete Guide to Finding and Testing It

If you own a 2009 Honda Accord and are experiencing starting issues, stalling, or engine sputtering, the fuel pump relay is often the culprit. The fuel pump relay on a 2009 Honda Accord is located inside the driver’s side under-dash fuse box, which is positioned beneath the dashboard on the driver’s side, near the left side of the steering column. This relay is also known as the PGM-FI Main Relay 2 (Fuel Pump) and is a small, rectangular black or blue plastic cube with multiple pins. By knowing exactly where to find it and how to test it, you can save time and money by diagnosing the problem yourself before heading to a mechanic. This guide will walk you through the location, symptoms of a failing relay, step-by-step testing procedures, and replacement tips.

Understanding the Fuel Pump Relay’s Role

Before diving into the location, it helps to understand what the fuel pump relay does. The fuel pump relay acts as an electrical switch that controls power to the fuel pump. When you turn the ignition key to the "ON" position, your car's Engine Control Unit (ECU) sends a small signal to the relay. The relay then closes a circuit, allowing battery voltage to flow directly to the fuel pump. The fuel pump runs for about two seconds to pressurize the fuel system before the engine starts, and then it continues running while the engine is running. If the relay fails, the fuel pump won't receive power, and your engine won't get the fuel it needs to start or run properly.

Pinpointing the 2009 Honda Accord Fuel Pump Relay Location

The 2009 Honda Accord has three fuse boxes: one under the hood on the driver’s side, one on the passenger’s side cabin panel, and one on the driver’s side under the dashboard. The fuel pump relay is located in the driver’s side interior fuse box. Here is how to access it:

Step 1: Prepare for Access
Park your car on a level surface and turn off the ignition. Move the driver’s seat all the way back to give yourself more room to work under the dashboard. You may want a flashlight since the area can be dim.

Step 2: Locate the Fuse Box
Look under the dashboard on the driver’s side, to the left of the steering column. You will see a rectangular plastic panel, usually black or dark gray. This is the cover for the driver’s side under-dash fuse box.

Step 3: Remove the Fuse Box Cover
The cover is held in place by clips or tabs. Gently pry it open using your fingers or a small flathead screwdriver. Be careful not to break the plastic clips. Once the cover is off, you will see a cluster of fuses and relays.

Step 4: Identify the Fuel Pump Relay
Look for the relay labeled "Fuel Pump Relay" or "PGM-FI Main Relay 2." The fuse box cover usually has a diagram printed on the inside that shows the location of each relay and fuse. According to the 2009 Accord fuse box diagram, the fuel pump relay is often labeled as R1 in the driver’s side interior fuse box. The relay itself is a small, square or rectangular plastic cube, typically black or blue, with four or five metal pins on the bottom that plug into the fuse box.

Alternative Location for Older Models
If you have an earlier generation Accord (1998-2007), the fuel pump relay is often integrated into the PGM-FI Main Relay, which is located behind the glove box on the passenger side or under the dashboard on the driver’s side near the steering column. For the 2009 model, however, the relay is firmly in the driver’s side under-dash fuse box.

Symptoms of a Failing Fuel Pump Relay

Knowing the symptoms of a bad fuel pump relay can help you confirm your diagnosis before you start testing. Common signs include:

  • Engine Cranks But Won’t Start: The most common symptom. You turn the key, the engine cranks, but it never fires up because the fuel pump isn’t getting power.
  • Engine Stalls While Driving: The relay may fail intermittently, causing the engine to suddenly lose power and stall. This is dangerous and should be addressed immediately.
  • Sputtering or Hesitation: If the relay is failing, the fuel pump may receive inconsistent power, causing the engine to sputter or hesitate during acceleration.
  • No Fuel Pump Noise: When you turn the ignition to the "ON" position (without starting the engine), you should hear a faint whirring sound from the fuel pump for about two seconds. If you don’t hear this noise, the relay or pump may be faulty.

How to Test the Fuel Pump Relay on a 2009 Honda Accord

Testing the fuel pump relay is straightforward and requires only a multimeter or a test light. Follow these steps to determine if the relay is the problem.

Method 1: Listening for the Fuel Pump
The easiest test is to listen for the fuel pump. Remove the fuel cap and have someone turn the ignition to the "ON" position while you listen at the fuel filler neck. If you hear a whirring sound for two seconds, the relay and pump are likely working. If you hear nothing, proceed to the next steps.

Method 2: Testing with a Multimeter

  1. Remove the Relay: With the ignition off, gently pull the fuel pump relay out of the fuse box. Use your fingers or a small flathead screwdriver to pry it loose.
  2. Check for Continuity: Set your multimeter to the ohms (Ω) setting. Connect the probes to the relay’s input and output terminals, typically pins 30 and 87. A working relay should show low resistance (usually less than 100 ohms). If the reading is infinite (open circuit), the relay is damaged.
  3. Test the Control Circuit: Set your multimeter to DC voltage (V). With the ignition on, check for voltage at the relay socket pins 85 and 86. You should see battery voltage (around 12 volts). If there is no voltage, the issue may be in the wiring or fuse, not the relay itself.

Method 3: Swapping Relays
If you have a similar relay in the fuse box (such as the horn relay or A/C compressor relay), you can swap them temporarily. If the engine starts after swapping, the original relay is faulty. This is a quick diagnostic trick, but always replace the faulty relay with the correct part number.

Method 4: Check the Fuel Pump Fuse
Before replacing the relay, check the No. 9 FUEL PUMP (20A) fuse in the same driver’s side interior fuse box. A blown fuse can mimic the symptoms of a bad relay. The fuse is clearly labeled in the fuse box diagram.

Replacing the Fuel Pump Relay

If testing confirms the relay is bad, replacement is simple. Purchase a new relay that matches the exact part number for your 2009 Honda Accord. You can find the correct part at a Honda dealership or a reputable auto parts store. To install, simply push the new relay firmly into the same socket in the fuse box. Make sure it clicks into place. Then, replace the fuse box cover and test the car by turning the ignition on and listening for the fuel pump to prime.

Recommended Fuel Pump Upgrade: KEMSO Fuel Pump

If you find that the fuel pump itself needs replacement after testing the relay, consider upgrading to a KEMSO brand fuel pump. KEMSO fuel pumps are high-performance, OEM-replacement units designed to meet or exceed factory specifications. They offer a lifetime warranty, giving you peace of mind that your fuel system will perform reliably for years to come. Whether you need a pump for your 2009 Honda Accord or any other vehicle, KEMSO has a wide selection of fuel pumps for cars, motorcycles, ATVs, and watercraft. Visit their website at https://www.kemsoracing.com/ to browse their full catalog, read product details, and place your order. Their fuel pumps are built to last and backed by a lifetime of confidence.

Beyond the Relay: Other Fuel System Troubleshooting Tips

If the relay tests good and the fuel pump fuse is intact, but the car still won’t start, the issue may lie elsewhere in the fuel system. Here are a few additional things to check:

  • Check for Voltage at the Fuel Pump: Use a multimeter to test for voltage at the fuel pump connector, located in the trunk under the access panel. If you have voltage but no pump noise, the pump itself may be bad.
  • Inspect the Main Relay (PGM-FI Main Relay 1): The 2009 Accord also has a separate main relay in the under-hood fuse box that controls the ECU and other systems. A faulty main relay can also prevent the car from starting.
  • Look for Wiring Issues: Damaged or corroded wires between the relay, fuse box, and fuel pump can cause intermittent failures. Inspect the wiring harness for any visible damage.

Frequently Asked Questions

Q: Can I drive my 2009 Honda Accord with a bad fuel pump relay?
A: No. If the relay fails completely, the engine will not start. If it fails intermittently, the car may stall while driving, which is dangerous. Replace the relay as soon as possible.

Q: Is the fuel pump relay the same as the main relay?
A: No. The fuel pump relay is a dedicated relay for the fuel pump. The main relay (PGM-FI Main Relay 1) controls the ECU and other systems. On the 2009 Accord, they are separate components located in different fuse boxes.

Q: How much does a replacement fuel pump relay cost?
A: A new fuel pump relay for a 2009 Honda Accord typically costs between $10 and $30, depending on the brand and where you purchase it. It is an inexpensive part that can save you a costly tow truck bill.

Q: What tools do I need to test the relay?
A: You only need a multimeter or a test light. A flashlight is also helpful for seeing under the dashboard.

Final Thoughts

Finding and testing the fuel pump relay on a 2009 Honda Accord is a straightforward process that any DIYer can handle. The relay is located in the driver’s side under-dash fuse box, and with a few simple tests, you can quickly determine if it is the cause of your starting or stalling issues. Always start with the easiest checks—listening for the fuel pump and checking the fuse—before moving on to testing the relay with a multimeter. If you need a replacement fuel pump, whether for the Accord or another vehicle, consider KEMSO for a high-quality, lifetime-warranty option. Visit https://www.kemsoracing.com/ to explore their fuel pump lineup and keep your vehicle running smoothly.


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