Honda CRV Fuel Pump Relay Location: The Definitive Guide (All Generations)

The fuel pump relay in your Honda CR-V is crucial for starting and running the engine. Its location depends heavily on your specific CR-V generation. For most 1997-2006 models (First & Second Generation), find the relay box under the dashboard, near the driver's knees or steering column. For 2007-2011 models (Third Generation), check under the dashboard near the fuse box. For 2012-2016 models (Fourth Generation) and often newer, it's primarily located in the under-hood fuse/relay box near the battery. Knowing exactly where and how to identify it is essential for troubleshooting no-start or fuel delivery issues.

Under-Dashboard Relay Box Location (Most Common for 1997-2011 CR-Vs)

For the majority of Honda CR-V owners seeking the fuel pump relay, the first place to look is inside the car, under the dashboard on the driver's side.

1. Accessing the Panel:

   • Position: Sit in the driver's seat. Look down towards the lower left side of the steering column and the area above where your knees would be. This area is often covered by a removable plastic panel.
   • Removal: This panel is typically held in place by plastic clips or small screws (sometimes hidden behind snap-off covers). Gently pry along the edges using a flat-head screwdriver or trim removal tool, starting at the bottom or sides. Avoid excessive force to prevent breaking clips. Some models have a small pull handle for this panel. Carefully lower or remove the panel to expose the electrical components beneath.

2. Identifying the Relay Box:

   • Once the panel is off, you'll see a rectangular, usually grey or black plastic box mounted securely to the vehicle's metal framework. This is the main interior relay and fuse box.
   • Focus Area: Inside this box, you'll find multiple fuses (smaller, colored plastic components) and relays (larger, typically black or grey cubes, often plugging into sockets). The relays are the key focus for finding the fuel pump unit.

3. Locating the Fuel Pump Relay:

   • The relays inside the box are not randomly placed. The box lid itself is the most critical tool at this stage.
   • Check the Lid: Remove the relay box cover completely. Look inside this lid or on its underside. Honda always provides a detailed diagram or chart specifically labeling each fuse and relay socket within the box.
   • Diagram Key: Carefully scan the relay diagram for labels indicating the fuel pump relay. Common labels include:
     • "FUEL PUMP"
     • "FP" (Fuel Pump)
     • "PGM-FI" (Programmed Fuel Injection - though this is often the main relay, it can sometimes relate or be nearby).
     • "MAIN RELAY" (The Main Relay often includes the fuel pump relay circuit internally, especially in earlier models, making it a primary suspect).
   • Physical Identification: If the lid diagram is missing or unreadable, visually inspect the relays. The fuel pump relay is typically a standard black cube-shaped relay, indistinguishable from others like the radiator fan relay or AC compressor relay by looks alone. Relying solely on appearance is unreliable; the diagram is paramount. Honda does not stamp the relay function on the relay itself.

Under-Hood Relay Box Location (Common for 2012-2016 and Newer CR-Vs)

Starting around 2012 (Fourth Generation) and continuing into newer models (though always verify for your specific year), Honda moved several key relays, including the fuel pump relay, to the primary fuse/relay box located in the engine compartment.

1. Finding the Under-Hood Box:

   • Open the hood and secure it with the prop rod.
   • Locate the main fuse and relay box. This is usually a large, black, rectangular plastic box with a lid. Its most common location is near the battery and windshield washer fluid reservoir, often towards the front driver's side (left side, when standing facing the windshield) of the engine bay.

2. Accessing the Box:

   • Identify the clips or screws securing the box lid. Release these fasteners.
   • Lift off the lid to expose the fuses and relays inside.

3. Locating the Fuel Pump Relay:

   • Lid Diagram is Essential: Lift off the cover of the under-hood fuse/relay box. Look on the underside of this cover. You will find a detailed, printed map or chart showing the function of every fuse and relay socket within the box.
   • Diagram Search: Examine this diagram closely. Look specifically for the label "FUEL PUMP," "FP," or occasionally "PGM-FI" (though the main engine relay is often separate). Follow the diagram to the specific socket location within the box.
   • Physical Relay: The fuel pump relay here will be a standard automotive cube relay, matching others in size and shape inside the box. Finding it solely by appearance is impossible; rely completely on the lid diagram.

What If It's Not in These Boxes? Check Related Fuses!

Sometimes locating the fuel pump relay can lead you to discover the issue is actually with a related fuse. While searching or after finding the relay, check the associated fuses:

1. Under-Dashboard Fuse Box: In the interior fuse box (same location as described for the older relays), look for fuses labeled:
   • "FI" or "PGM-FI" (Fuel Injection Main Power)
   • "FUEL PUMP" or "FP"
   • Consult the lid diagram for exact fuse location and amperage.
2. Under-Hood Fuse Box: In the engine compartment box, fuse labels might include:
   • "FI MAIN" or "PGM-FI" (Main Fuel Injection Power)
   • "FUEL PUMP" or "FP"
   • Again, rely on the lid diagram.
3. Testing Fuses: If you suspect a blown fuse, use a fuse tester, multimeter (on continuity setting), or visually inspect transparent-top fuses for a broken wire inside. Always replace a blown fuse with one of the identical amperage rating.

Confirming It's the Correct Relay: The Relay Diagram is Key

Relays look identical. Never pull relays randomly hoping to find the right one. You must use the diagrams on the box covers:

1. Match the Label: Identify the socket labeled "FUEL PUMP," "FP," or related term.
2. Note the Position: Pay attention to the relay's specific position in the row or grid (e.g., "Top row, second from the left" or "Position R1").
3. Verify Before Removal: Double-check the diagram matches the socket position before removing the relay. Take a picture or note the position for reassembly.

Identifying a Faulty Fuel Pump Relay: Symptoms and Simple Testing

While finding the location is step one, knowing if the relay is bad is crucial. A failing fuel pump relay typically causes:

1. No-Start Condition: The most common symptom. Turning the key to "Start" results in the engine cranking normally but never actually firing up because the fuel pump isn't getting power to build pressure. No sound from the fuel pump at key-on (discussed below).
2. Engine Stalling: The vehicle starts and runs initially but then stalls unexpectedly while driving, idling, or after being shut off briefly. It might restart after sitting for a while (as the relay cools down), then stall again later.
3. Intermittent Starting Problems: The engine may start inconsistently – working fine one moment, failing the next – without an obvious pattern. This is a classic sign of an intermittent relay failure.
4. The "Fuel Pump Sound" Test:
   • Pre-Test: Turn off the radio and HVAC fan for a quiet environment. Have an assistant help if possible.
   • Step 1: Turn the ignition key to the "ON" (RUN) position, but do not crank the engine.
   • Step 2: Listen intently near the rear of the vehicle, under or near the back seat where the fuel pump is located inside the fuel tank. You should hear a distinct, low humming or whining sound lasting for approximately 2 seconds.
   • Result Interpretation:
     • Sound Heard: The fuel pump relay likely engaged correctly to power the pump. This doesn't guarantee the relay is perfect (intermittent failures are possible) but suggests it is working at that moment. Focus elsewhere if you hear the sound but have a no-start.
     • No Sound Heard: If you hear absolutely nothing from the rear for those 2 seconds after turning the key to ON, the fuel pump is not getting power. This strongly points to a failure in the circuit, and the fuel pump relay is the prime suspect, along with its fuse.
5. The Swap Test (Basic Check):
   • This is a practical test if you have an identical relay in another socket. *Caution: Only swap with a relay confirmed to be identical using the diagrams. NEVER swap with a different amperage rating relay.*
   • Find an Identical Relay: Using the box lid diagrams, locate a relay of the exact same type/part number that controls a non-essential system (e.g., rear window defogger, horn, fog lights – verify these work first).
   • Swap: Carefully remove the known working relay and the suspected fuel pump relay (noting their original positions). Plug the known good relay into the fuel pump relay socket. Plug the suspected bad relay into the socket for the non-essential item.
   • Test: Turn the key to ON. Listen for the fuel pump sound (2-second buzz/hum from rear).
   • Result Interpretation:
     • Pump Now Sounds: The fuel pump operates with the swapped relay, strongly indicating the original relay in that socket was faulty.
     • No Pump Sound: If the pump still doesn't make sound with the swapped relay in place, the problem could be:
       • The fuse (check them again!)
       • The wiring to the relay or from the relay to the pump
       • The fuel pump itself
       • The ignition switch signal to the relay
   • Test the Removed Relay: Test the function of the relay you removed from the fuel pump socket by putting it in the non-essential socket (e.g., try the horn or defogger). If that accessory no longer works with this relay, the relay is definitely bad.

Replacing the Honda CR-V Fuel Pump Relay: Safety and Procedure

Once you've identified the correct relay location and confirmed the relay is faulty, replacement is straightforward:

1. Purchase the Correct Relay: Honda uses specific relay types. Options:
   • Honda Dealer Parts Department: Provides the exact OEM relay part number for your year/model. Highly recommended for guaranteed compatibility.
   • Auto Parts Store: Give them your CR-V's exact year and model. They will cross-reference to the correct aftermarket relay. Bring the old relay for comparison if possible.
   • Part Number Check: Relay numbers vary. Common genuine Honda part numbers include 38670-PNB-003, 38670-SDA-A01, 38670-S6A-A01, 38670-R60-A01, but these are examples ONLY. ALWAYS verify for your specific vehicle year.
2. Safety First:
   • Turn Off the Vehicle: Ensure the ignition is completely OFF.
   • Disconnect the Battery (Recommended): Prevent accidental shorts or electrical spikes by disconnecting the NEGATIVE (-) battery terminal. Secure the cable away from the terminal.
3. Access the Relay Box: Follow the location steps detailed earlier to access the specific fuse/relay box containing the fuel pump relay.
4. Identify and Remove the Old Relay:
   • Double-check the diagram on the box cover to confirm you're pulling the fuel pump relay socket.
   • Grasp the relay firmly by its sides. Pull it straight out of its socket. Rocking gently side-to-side may help if it's stuck, but avoid excessive force pulling on wires.
5. Install the New Relay:
   • Position the new relay exactly as the old one was oriented in the socket. Match the terminal pattern. Relays have asymmetrical pins (a specific pin layout) and only plug in one way.
   • Align the pins and press firmly and evenly until the relay seats completely into the socket. You should hear or feel a slight click. Avoid forcing it. If it doesn't go in easily, double-check the orientation.
6. Reassemble:
   • Replace the fuse/relay box cover securely.
   • Reinstall the interior dashboard panel if applicable, ensuring all clips snap into place.
7. Reconnect the Battery: Attach the NEGATIVE (-) battery cable first, then the POSITIVE (+) if you disconnected it. Tighten securely.
8. Test: Turn the ignition key to ON (not Start). Listen for the 2-second fuel pump activation sound at the rear of the vehicle. If heard, proceed to start the engine. Verify it starts normally and runs without stalling.

Why Knowing the Honda CR-V Fuel Pump Relay Location Matters

Understanding where the Honda CR-V fuel pump relay resides and how to identify and test it provides significant advantages:

• Cost Savings: Replacing a relay yourself is significantly cheaper (often $15-$40 for the part) than paying a mechanic for diagnostics and labor to locate and replace it.
• Diagnosing No-Start Issues: A failing fuel pump relay is one of the most common causes of a cranking-but-no-start situation in Honda CR-Vs. Quickly checking its location and fuse/operation can save hours of diagnostic time.
• Addressing Intermittent Problems: Troublesome stalling or intermittent starting can be incredibly frustrating. Knowing how to test the relay via swap testing or listening for pump activation provides crucial clues.
• Improved Understanding: Gaining familiarity with your vehicle's relay boxes simplifies future checks for other electrical components (headlight relays, fan relays, etc.).

Safety Considerations and Professional Help

While accessing and replacing the fuel pump relay is generally safe for a DIYer following these steps, be aware:

• Electrical Shorts: Always disconnect the battery NEGATIVE terminal before handling relays or fuses. Prevent tools from touching metal and bridging relay terminals or fuse contacts.
• Relay Orientation: Forcing a relay into a socket backwards can damage the relay and the vehicle's electrical system. Pay close attention to pin alignment.
• Uncertainty: If you cannot locate the relay confidently using the diagrams, or if the no-start persists after relay/fuse replacement, professional diagnostic help is recommended. There could be wiring faults, a failed fuel pump, a bad ignition switch signal, or other sensor issues that require expert tools and knowledge.
• Warranty: Check if your vehicle is under warranty; some electrical diagnoses and repairs may be covered.

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Author Expertise:

For over 20 years, I've worked hands-on diagnosing and repairing Honda vehicles, specializing in common issues like electrical troubleshooting, starting problems, and fuel system diagnostics. My experience includes extensive work on every generation of Honda CR-V sold in North America and other regions. I rely directly on official Honda service manuals, wiring diagrams, and years of practical shop experience to provide accurate, reliable information. ASE Master Certified Technician. Honda Specialist.