2006 Subaru Impreza Fuel Pump Relay Location: A Complete Owner's Guide

If your 2006 Subaru Impreza cranks but won't start, the fuel pump relay is one of the first things you should check. On the 2006 Subaru Impreza, the fuel pump relay is located behind the right side of the dashboard, typically accessed by removing the glove box. This small, inexpensive component is a common failure point and is much easier and cheaper to replace than the entire fuel pump assembly.

The relay acts as a remote switch that takes a small amount of amperage from the ignition switch to activate, then sends the larger amount of amperage needed to power the fuel pump. When it fails, the fuel pump won't receive power, and your engine won't start. Understanding exactly where to find this relay and how to replace it can save you both time and money.

Why the Fuel Pump Relay Location Matters

Before you dive into replacing parts on your 2006 Impreza, you need to know precisely where the fuel pump relay is hiding. Getting this wrong can lead to replacing the wrong component, wasting time, and possibly creating new problems. The fuel pump relay is often confused with the main relay, but they serve different functions.

The main relay powers up the engine control unit (ECU) and other key engine electronics. The fuel pump relay specifically powers the fuel pump. Both can cause a no-start condition, but they are separate components located near each other. On most 2002-2007 Impreza models, the fuel pump relay has a green plug base, which distinguishes it from the main relay located nearby.

Exact Location for the 2006 Model

For the 2006 Subaru Impreza, the fuel pump relay is positioned behind the right side of the dash. This is on the passenger side of the vehicle. To access it, you will need to remove the glove box. Some owners describe it as being located right next to the blower motor, which helps with identification once you have the panel open.

The relay will have four wires going to it, typically in the following colors: vio/wht, grn/red, blk/red, and blk/yel. This wiring pattern helps confirm you have found the correct relay rather than the main relay or another component in the same area.

Step-by-Step Access to the Fuel Pump Relay

1. Prepare Your Vehicle

Park your 2006 Subaru Impreza on a level surface and turn the ignition off. Remove the key from the ignition. It is recommended to disconnect the negative battery terminal before working with any electrical components under the dash. This step prevents accidental shorts and keeps you safe while reaching into tight spaces.

2. Remove the Glove Box

Open the passenger side glove box. You will need to remove the screws or release the tabs that hold it in place. On most Impreza models from this generation, the glove box drops down after releasing the side straps and removing a few screws. Carefully lower the glove box to access the area behind it. You do not need to completely remove it in most cases, just lower it enough to reach behind the dash panel.

3. Locate the Relay

Once the glove box is out of the way, look for the relay block mounted behind the dash. The fuel pump relay will be a small rectangular component plugged into the relay module. Look for the one with the green connector base. If you are unsure, compare the relay you find with the wiring colors mentioned earlier. The relay should match the four-wire pattern described above.

4. Remove the Old Relay

The fuel pump relay has two plastic clips that hold it into its socket. These clips are attached to plastic "buttons" on the sides of the relay. Press these tabs in while pulling on the relay to remove it. In most cases, you can pull it out with your fingers, but if it is stuck, a pair of pliers can help. Be careful not to damage the socket or surrounding wiring.

5. Install the New Relay

Plug the new relay into the same socket, making sure it clicks securely into place. The relay should sit flush with the relay module. If it does not seat properly, check the orientation of the pins and try again. Once installed, test the system by turning the ignition to the "ON" position and listening for the fuel pump to prime.

Symptoms of a Failing Fuel Pump Relay

Knowing the location is only half the battle. You also need to recognize when the relay is going bad. Common symptoms include:

  1. Engine cranks but won't start – This is the most obvious symptom. The starter turns the engine over, but the fuel pump never activates, so there is no fuel pressure.

  2. Intermittent starting problems – The car may start fine sometimes but fail to start other times. This intermittent behavior often points to a relay that is wearing out internally.

  3. No fuel pump prime noise – When you turn the ignition to the "ON" position without starting the engine, you should hear a brief whirring sound from the fuel pump. If you don't hear this, the relay may not be sending power to the pump.

  4. Engine stalls while driving – A failing relay can cause the fuel pump to lose power while the engine is running, causing the engine to stall unexpectedly.

Testing the Fuel Pump Relay

Before spending money on a new relay, you can test the old one. A simple test involves swapping the fuel pump relay with a known-good relay of the same type from another location in the fuse box. If the fuel pump starts working, the original relay is faulty.

You can also use a multimeter to check for continuity across the relay terminals. When the relay is energized, there should be continuity between the switched terminals. When it is de-energized, there should be no continuity. If the relay fails this test, it needs to be replaced.

Cost of Replacing a Fuel Pump Relay

One of the best things about this repair is how inexpensive it is. The replacement relay costs:

  • New OEM relay: $30 - $55
  • New aftermarket relay: $18 - $25
  • Shop labor: $50 - $100 (if you choose to have a professional do it)

As you can see, the part itself is quite affordable. Since the replacement process requires no special tools, doing it yourself can save you the labor cost. It is a great DIY job for beginners.

Important Safety Notes

When working with the fuel system or electrical components, safety should be your top priority. Follow these precautions:

  1. Work in a well-ventilated area – Fuel vapors are flammable and can be hazardous in enclosed spaces.

  2. Keep clear of open flames – Do not smoke or work near any ignition sources when dealing with fuel system components.

  3. Relieve fuel pressure first – If you are going beyond just replacing the relay and need to work on the fuel pump itself, you should relieve the fuel system pressure first. You can do this by starting the engine, disconnecting the fuel pump relay, and waiting for the engine to stall. Then crank the engine for about 3 seconds to remove any remaining pressure.

  4. Disconnect the battery – Before working on any electrical components under the dash, disconnect the negative battery terminal to prevent shorts and accidental relay activation.

What to Do If Replacing the Relay Doesn't Fix the Problem

If you replace the fuel pump relay and the car still won't start, it's time to move on to other diagnostic steps. The relay is a common failure point, but it is not the only possible culprit.

  1. Check the fuel pump fuse – There is a 10A fuse that powers the fuel pump circuit. If this fuse is blown, the pump won't run even with a good relay.

  2. Test the fuel pump itself – If the relay is good and the fuse is intact, the fuel pump may be faulty. You can test for power at the fuel pump connector and check for proper fuel pressure.

  3. Check the ground connections – A poor ground can prevent the fuel pump from running. On Subaru models, engine ground connections are known to corrode and cause intermittent electrical issues.

  4. Inspect the wiring harness – Look for damaged or corroded wires in the fuel pump circuit, particularly at the junction connectors that are known failure points on these vehicles.

OEM Part Numbers for the Fuel Pump Relay

If you need to order a replacement relay, the OEM part numbers you may need include:

  • 25232AA100
  • 82501GA240
  • 25232AA020

These numbers can help ensure you get the correct part for your 2006 Subaru Impreza. Always verify part numbers with your dealer or parts supplier before purchasing, as specifications can vary by production date and trim level.

Recommended Fuel Pump Upgrade: KEMSO

Once you've confirmed the fuel pump relay location and replaced it, you might also consider the condition of the fuel pump itself. If your fuel pump is old or showing signs of wear, upgrading to a quality replacement is a smart move. We recommend the KEMSO Fuel Pump for Subaru Impreza 1998-2023, which is designed as a high-performance, OEM replacement component.

KEMSO fuel pumps are built to meet or exceed original equipment specifications, ensuring proper fuel delivery and reliable engine performance. Each pump comes with a lifetime warranty, giving you peace of mind that your investment is protected. Whether you drive a base Impreza or a high-performance WRX variant, KEMSO offers a direct-fit solution that installs easily without modification.

You can browse the full range of KEMSO fuel pumps and other performance products at: https://www.kemsoracing.com/.

Final Thoughts

Finding the fuel pump relay on a 2006 Subaru Impreza is straightforward once you know where to look. It's behind the glove box on the passenger side of the dashboard, right next to the blower motor, and it has a distinctive green plug base that sets it apart from other relays in the area.

Start your diagnosis by checking the relay if your car won't start or is experiencing intermittent fuel delivery issues. This simple component is inexpensive, easy to replace, and a common culprit in no-start situations. If a new relay doesn't solve the problem, continue your diagnostic process by checking fuses, grounds, and the fuel pump itself.

Always refer to your owner's manual or factory service manual for model-specific details, and when in doubt, consult a qualified technician. With the right information and a little patience, most owners can handle this repair in under 30 minutes and get back on the road with confidence.

If you need a replacement fuel pump or want to upgrade your current setup, remember to check out KEMSO's high-performance, OEM replacement fuel pumps with lifetime warranty at https://www.kemsoracing.com/.


Back to blog