The 2017 Honda Accord Air Filter: Your Essential Guide to Engine Protection, Clean Air & Peak Performance

Replacing the engine air filter and cabin air filter in your 2017 Honda Accord is a critical, cost-effective maintenance task. Regularly changing these filters protects your engine from harmful contaminants, ensures optimal performance and fuel economy, and provides clean, fresh air inside the cabin for you and your passengers. Both filters are relatively inexpensive, readily available, and designed for straightforward DIY replacement following Honda's specific recommendations for your vehicle.

Forgetting or delaying this simple maintenance can lead to reduced engine efficiency, potential damage, unpleasant odors inside the car, and poor HVAC system performance. Understanding the function, location, replacement process, and recommended change intervals for both the engine air filter and the cabin air filter in your 2017 Accord is key to keeping your sedan running smoothly and comfortably for years to come. This guide provides the detailed, actionable information owners need.

Understanding Your Accord's Two Vital Filters

Your 2017 Honda Accord actually utilizes two distinct air filters, each serving a crucial but different purpose:

1. Engine Air Filter: This filter is the lung protector for your Accord's engine.

   • Location: Found within a plastic air filter box in the engine compartment.
   • Function: Cleans the air drawn into the engine for combustion. It traps dust, dirt, pollen, insects, road debris, and other airborne particles before they enter the sensitive internal components. Clean air is essential for efficient fuel burning, power output, and preventing premature engine wear.
   • Consequences of Neglect: A clogged engine air filter restricts vital airflow. This forces the engine to work harder, leading to noticeable symptoms like reduced fuel economy, diminished acceleration and power, a rougher idle, and potentially even illuminating the check engine light in severe cases. Over time, dirt bypassing a degraded filter can cause internal engine damage.

2. Cabin Air Filter (Pollen Filter): This filter ensures the air inside your Accord's passenger compartment stays clean.

   • Location: Situated behind the glove compartment, accessible from inside the vehicle.
   • Function: Filters the air coming through your Accord's heating, ventilation, and air conditioning (HVAC) system. It traps dust, pollen, mold spores, allergens, exhaust soot, and other pollutants present in the outside air before they are blown into the cabin.
   • Consequences of Neglect: A dirty or clogged cabin air filter significantly reduces airflow from the vents (making your A/C and heater less effective). It allows unfiltered allergens and pollutants into the cabin, potentially triggering allergies and creating unpleasant musty odors. The HVAC system may also become noisier as the fan strains against the blockage.

Replacement Frequency: Honda's Recommendations & Real-World Factors

Honda provides baseline recommendations in the owner's manual and maintenance minder system, but real-world conditions often necessitate more frequent changes:

• Engine Air Filter: Honda typically suggests inspecting the engine air filter during certain maintenance intervals (like the "A1" service code) and replacing it as needed. The Maintenance Minder system will often trigger an "R" code specifically for its replacement. As a general guideline:

  • Honda's Interval: Often every 15,000 - 30,000 miles, but heavily dependent on conditions.
  • Real-World Recommendation: Inspect visually every 12,000 miles or 12 months. Replace it every 15,000 to 25,000 miles for most drivers. Increase frequency significantly if you drive in severe conditions.

• Cabin Air Filter: Honda generally recommends replacing the cabin air filter every 15,000 to 30,000 miles. The Maintenance Minder usually triggers a replacement reminder with a specific code (often "B" service related).

  • Real-World Recommendation: Replace the cabin air filter every 12 to 15 months or 15,000 miles, whichever comes first. Drivers in areas with high pollution, heavy dust (dirt roads, construction zones), or significant seasonal allergies should change it more often, possibly every 6-12 months.

Severe Driving Conditions Requiring More Frequent Changes:

Both filters clog faster under demanding circumstances:

• Dusty/Sandy Environments: Desert regions, rural dirt roads, construction areas.
• High-Pollution Areas: Dense city traffic with heavy exhaust fumes.
• Humid Regions: Prone to mold and mildew growth within the HVAC system.
• Stop-and-Go Traffic: Increases strain on engine and HVAC systems.
• Exposure to Industrial Pollution: Factories, refineries.
• Presence of Allergies: Allergy sufferers benefit from more frequent cabin filter changes.

How to Replace the 2017 Honda Accord Engine Air Filter (DIY Guide)

Replacing the engine air filter is one of the most accessible DIY tasks. Here’s how:

1. Safety First: Park the vehicle on a level surface, engage the parking brake, and allow the engine to cool completely.
2. Locate the Air Filter Box: Open the hood. Identify the large, usually black plastic box on the driver's side of the engine bay. It has a large inlet tube connected to it.
3. Open the Air Filter Box: Release the retaining clips or clamps securing the top cover of the air filter box. These are typically metal clips that flip up or plastic clips that pull outward. Some models might have screws or a combination. Carefully lift the top cover off.
4. Remove the Old Filter: Carefully pull the old filter straight up and out of the base of the filter box. Note its orientation (which side faces up, direction of pleats).
5. Clean the Filter Housing: Wipe out the interior of the filter box (both top and bottom sections) with a clean, dry rag or shop cloth. Remove any accumulated debris, leaves, or dirt. Avoid introducing anything into the intake tube.
6. Install the New Filter: Place the new filter into the base of the housing, ensuring it sits flat and matches the exact orientation of the old filter. The sealing edges must fit snugly against the housing walls. Double-check all edges are properly seated.
7. Reassemble: Carefully place the top cover back onto the filter box. Securely fasten all the clips or clamps. Ensure the cover is properly seated and all clips are fully locked.
8. Dispose: Discard the old filter responsibly.

How to Replace the 2017 Honda Accord Cabin Air Filter (DIY Guide)

Replacing the cabin filter involves accessing behind the glove box:

1. Prepare: Open the front passenger door. Ensure the glove compartment is empty.
2. Open Glove Box & Stop: Fully open the glove box door until it stops naturally.
3. Clear Obstructions: Remove any items stored inside.
4. Release Glove Box Limits: Look inside the glove box opening towards the sides. Near the top right and top left corners inside, you'll find small stopper arms or tabs. These prevent the glove box from opening too far. Pinch or push these stoppers inward (towards the sides of the glove box) to allow the glove box to pivot down further. Firmly push the sides of the glove box near these stops inward while gently lowering the glove box down past its normal stopping point. This provides necessary clearance. Keep the glove box hanging down.
5. Locate the Filter Cover: Look straight back into the space behind where the glove box was. You will see a horizontal or slightly angled rectangular plastic access door. This is the cabin air filter cover. It is usually held in place by two or three small clips or tabs (often on the left and right sides).
6. Remove the Filter Cover: Press the retaining clips or tabs inward or sideways and carefully slide the cover straight out towards you. Set the cover aside.
7. Remove the Old Filter: Pull the old filter straight out towards you. Note the airflow direction arrows printed on the edge of the filter frame – they should point towards the rear of the vehicle (down into the filter slot) or have the arrow pointing DOWN.
8. Install the New Filter: Insert the new filter into the slot, making absolutely certain the airflow direction arrows point the correct way (match the old filter's orientation, arrows typically DOWN or towards the rear). Ensure the filter is fully seated and lying flat within the housing. Using the wrong orientation drastically reduces effectiveness.
9. Reinstall the Cover: Slide the plastic cover back into place until the clips or tabs securely lock it. Ensure it's flush and properly seated.
10. Close Glove Box: Lift the glove box back up into position. Gently push the sides near the stoppers back outwards until you hear/feel the stopper arms re-engage.
11. Test Operation: Start the vehicle, turn the HVAC fan to its highest speed, and feel for strong, unobstructed airflow. Check for unusual noises.
12. Dispose: Discard the old filter responsibly.

Signs Your 2017 Honda Accord Air Filters Need Replacement

Don't wait solely for the mileage indicator. Watch and listen for these signals:

• Engine Air Filter:

  • Visible Dirt/Dark Pleats: A clear inspection reveals heavy dirt accumulation or grey/black discoloration in the pleats. Light should pass through many pleats easily when held to a bulb.
  • Reduced Fuel Mileage: Noticeable drop in miles per gallon over consecutive tanks.
  • Lack of Power: Sluggish acceleration, especially noticeable when merging or climbing hills.
  • Rough Engine Idle: Engine vibrates or runs unevenly when stopped.
  • Check Engine Light: A severely restricted filter can sometimes trigger the P0171 (System Too Lean) code.
  • Unusual Engine Sounds: Possible sucking or whistling sounds from the intake when accelerating.

• Cabin Air Filter:

  • Weak Airflow: Significantly reduced airflow from the dashboard vents, even on the highest fan setting. Poor defrosting capability.
  • Persistent Unpleasant Odors: Musty, moldy, or sour smells emanating from the vents, especially when the A/C or heater is first turned on.
  • Increased Allergy Symptoms: Sneezing, watery eyes, or stuffiness worsen while driving.
  • Excessive Noise: The HVAC fan sounds louder than usual or strains.
  • Visible Debris: Dust visibly blows out of the vents when the system starts.
  • Foggy Windows: Poor airflow contributes to windows fogging up more easily.

Choosing the Right Replacement Filters for Your Accord

Selecting quality filters is crucial:

1. Always Specify 2017 Honda Accord: Confirm the filter is specifically designed for the ninth-generation (2013-2017) Accord. LX, Sport, EX, EX-L, and Touring models typically use the same engine filter. Verify cabin filter compatibility for all trims.
2. OEM (Original Equipment Manufacturer):
   • Pros: Guaranteed perfect fit and filtration performance meeting Honda's exact specifications. Packaged in Honda-branded boxes.
   • Cons: Generally the most expensive option. Purchased at Honda dealership parts counters or reputable online OEM parts retailers.
3. Premium Aftermarket Brands: These are excellent choices offering quality often comparable or superior to OEM at a lower cost.
   • Reputable Engine Air Filter Brands: Honda A-Spec, WIX, Purolator, Hastings Premium, K&N (High-Flow Washable - requires specific oiling kits/maintenance), Mann-Filter.
   • Reputable Cabin Air Filter Brands: Honda A-Spec, Bosch, FRAM Fresh Breeze, Purolator ONE, Mann-Filter (FreciousPlus combines particle + odor reduction), EPIC (Carbon Activated). Activated carbon cabin filters are highly recommended for better odor control.
4. Standard Aftermarket/Economy Brands: Found at discount stores or online marketplaces.
   • Consideration: May offer adequate basic filtration but often have lower filter media quality, less precise fitment, and thinner frames compared to OEM or premium brands. Not generally recommended for long-term engine protection or optimal cabin air quality. Quality control can be inconsistent.
5. Key Features to Consider:
   • Engine Filter: High-efficiency synthetic media provides superior dust-holding capacity. Look for features like gasket sealing technology. Washable filters (like K&N) require special care.
   • Cabin Filter: Activated Carbon is strongly advised. It filters particles and absorbs harmful gases and unpleasant odors. High particle filtration efficiency ratings are beneficial. Multi-layer filters (particle + odor) are common.

The Importance of Using High-Quality Filters

Cutting corners on filter quality can have serious consequences:

• Engine Filters: Poorly constructed or ill-fitting filters may allow unfiltered air to bypass the media ("filter bypass"), letting dirt directly enter your engine, causing accelerated wear on cylinders, pistons, rings, and valves. Thin or inefficient media clogs faster.
• Cabin Filters: Cheap filters often lack sufficient surface area and use less effective media. Non-carbon filters won't tackle odors. Ill-fitting filters let polluted air sneak past, defeating their purpose. Flimsy frames can collapse within the housing, severely restricting airflow.
• Long-Term Impact: The small savings on a cheap filter are insignificant compared to the potential costs of engine repairs or reduced resale value due to poor maintenance history. Protecting the engine investment and ensuring clean air are worth the minor extra cost for premium or OEM quality filters.

Professional vs. DIY Replacement: Costs and Benefits

• DIY Replacement:

  • Cost Savings: This is the most significant advantage. Engine filters cost $15-$50 (OEM/premium). Cabin filters cost $15-$40 (with activated carbon). Doing it yourself avoids hourly labor charges ($50-$150+ at a dealer/shop).
  • Convenience: Can be done in your driveway in 10-20 minutes per filter with basic tools (often just your hands). Parts are easily purchased online or at auto parts stores.
  • Satisfaction: Simple task provides a sense of accomplishment.
  • Downside: Requires minimal mechanical aptitude. Must ensure correct installation orientation.

• Professional Replacement (Dealership or Independent Shop):

  • Guaranteed Work: Filter supplied and installed by professionals; work is often warrantied. Ensures correct installation.
  • Convenience: No need to purchase tools or parts; someone else handles the task.
  • Cost: Adds significant expense – expect labor charges for each filter ($50-$150+ total), plus markup on the parts themselves. Often billed as part of scheduled maintenance visit.

For most 2017 Honda Accord owners, replacing the air filters DIY is a highly recommended maintenance task due to the significant cost savings and simplicity of the procedure.

Beyond the Filter: Maintaining Your Accord's Air Systems

While replacing the filters is paramount, occasionally consider:

• Cabin Filter Box Cleaning: When replacing the cabin filter, briefly run the fan on high to blow out loose debris inside the air intake plenum behind the filter location.
• HVAC System Cleaning (Professional): If strong musty odors persist even after a new cabin filter, a professional HVAC system cleaning using an EPA-approved evaporator coil cleaner and disinfectant spray may be necessary to kill mold and mildew deep within the system.
• Air Intake Inspection: Periodically visually inspect the intake ducting near the engine air filter box for cracks, loose connections, or damage that could allow unfiltered air into the engine.

Conclusion: A Small Task, Significant Impact

Neglecting the engine air filter or cabin air filter in your 2017 Honda Accord is a false economy. Replacing both filters according to Honda's recommendations and your specific driving conditions is one of the simplest, cheapest, yet most vital forms of preventative maintenance.

• Protect Your Engine: A clean engine air filter ensures optimal airflow for combustion efficiency, safeguarding against power loss, reduced fuel economy, and costly engine wear. Regular replacement prevents dirt ingestion.
• Breathe Easy Inside: A fresh cabin air filter, especially one with activated carbon, effectively cleans the air you breathe during every journey. It combats allergens, pollutants, and unpleasant odors, enhancing comfort for everyone inside. Consistent replacement ensures strong airflow and HVAC performance.
• Preserve Value: Demonstrating consistent attention to this basic maintenance task contributes to the overall health and longevity of your Accord, supporting its long-term value.

Following the detailed DIY guides provided, recognizing the telltale signs of filter restriction, and choosing quality replacement parts empower you to easily perform this maintenance. Making the 2017 Honda Accord air filter replacement a standard part of your routine keeps your sedan performing reliably, efficiently, and provides a cleaner, healthier driving environment for miles ahead.