Acura ILX Mass Air Flow Sensor Guide for 2013-2022 Models
Resolving rough idling, poor acceleration, and bad gas mileage in your Acura ILX starts here.
- Symptoms like rough idle and hesitation are common, but always check for vacuum leaks before replacing the sensor.
- For best results, choose an OEM-equivalent brand like Denso or Hitachi; cheaper sensors can cause persistent issues.
- Replacement is extremely easy, requiring only a screwdriver and about 15 minutes.
- There are no known recalls or TSBs for the MAF sensor on the 2013-2022 Acura ILX.
Is Your Acura ILX Running Poorly? It Could Be the MAF Sensor
If your 2013-2022 Acura ILX is experiencing symptoms like a shaky idle, hesitation when you accelerate, or suddenly getting worse gas mileage, a failing Mass Air Flow (MAF) sensor is a common suspect. This sensor tells your engine's computer how much air it's breathing, which is essential for the right air-fuel mixture. When it sends bad data, it can cause a variety of noticeable engine problems.
First, Check for Simple Fixes
Before you replace the MAF sensor, check for other common issues that can mimic a bad sensor. A vacuum leak, caused by a cracked or loose air intake hose between the sensor and the engine, can cause identical symptoms and trigger a MAF-related check engine light (like code P0101). Also, ensure your engine air filter is clean, as a clogged filter can restrict airflow and cause incorrect sensor readings.
Symptoms of a Failing Acura ILX MAF Sensor
- Rough or Shaky Idle: The engine may vibrate or sound unstable when stopped.
- Hesitation or Stalling: The car may stumble or jerk during acceleration, and in severe cases, the engine may stall.
- Poor Fuel Economy: You may notice you're visiting the gas station more often because the engine is running too rich (too much fuel).
- Check Engine Light: A faulty MAF sensor will often trigger the check engine light with codes like P0101, P0102, or P0103. 🎬 See this breakdown of P0101 causes and symptoms.
- Black Smoke from Exhaust: This is a sign of an overly rich fuel mixture, where unburned fuel is exiting through the exhaust.
Choosing the Right Aftermarket MAF Sensor for Your ILX
When it comes to sensitive electronics like the MAF sensor, not all aftermarket brands are created equal. For Honda and Acura vehicles, using a sensor from the original equipment manufacturer (OEM) or a brand known for quality is highly recommended to avoid further issues.
Tier 1: OEM-Equivalent Brands
These brands are known to be the original suppliers for Honda/Acura. Choosing one of these is the safest bet for a direct, reliable replacement.
- Denso: Widely regarded as an OEM for many Honda/Acura parts, Denso sensors are designed to meet exact factory specifications.
- Hitachi: Another top-tier Japanese manufacturer that often supplies electronic parts to Honda.
Tier 2: Reputable Aftermarket Brands
These companies have a long history of producing quality aftermarket parts that are a good balance of price and reliability.
- Delphi: A major OEM supplier for many car brands, known for quality electronics.
- NGK/NTK: While famous for spark plugs, NTK (the electronics division) produces high-quality sensors.
- Standard Ignition (SMP): A well-established brand in the aftermarket with a reputation for dependable parts.
- Walker Products: A long-standing manufacturer of fuel system and engine management components.
Tier 3: Budget-Friendly Brands
Brands like DriveWire, Cardone, or other private labels offer a lower price point. While tempting, be aware that these sensors can sometimes be less precise or have a shorter lifespan, potentially causing performance issues that lead you back to square one.
A Note on Engine Differences
The 2013-2015 Acura ILX was available with both a 2.0L and a 2.4L engine. These engines may use different MAF sensors. Always verify the correct part number for your specific vehicle and engine size before ordering to ensure compatibility.
Cost of Replacing an Acura ILX MAF Sensor
The cost can vary significantly based on the brand you choose and whether you do the work yourself.
| Part Type | Estimated Cost |
|---|---|
| New OEM (from Acura dealer) | $240 - $450 |
| New Aftermarket (Tier 1-2) | $90 - $160 |
| New Aftermarket (Budget) | $56 - $90 |
| Shop Labor | $50 - $100 |
Frequently Asked Questions
Can I just clean my ILX MAF sensor?
Sometimes, cleaning the sensor can resolve the issue, especially if the problems are minor. You must use a dedicated MAF sensor cleaning spray. 🎬 Watch: Detailed guide on how to clean your sensor safely. Never touch the sensor's delicate wires. If the sensor is electronically faulty or cleaning doesn't fix the problem, replacement is necessary.
Are there any recalls for the 2013-2022 Acura ILX MAF sensor?
No. As of early 2026, there are no specific recalls or technical service bulletins (TSBs) from Acura or the NHTSA for Mass Air Flow sensor failure on the 2013-2022 ILX. Recalls for this vehicle pertain to other components like fuel pumps and airbags.
Is it difficult to replace the MAF sensor myself?
No, this is a very easy DIY job for most owners. The sensor is located on the engine's air intake tube, right behind the air filter box. 🎬 Watch: Locate the MAF sensor on your 2.4L ILX engine. It is held in by two screws and an electrical connector. The entire job typically takes less than 15 minutes with basic hand tools.
Why shouldn't I just buy the cheapest MAF sensor available?
The MAF sensor provides crucial data for engine performance. Cheaper, lower-quality sensors can have incorrect calibration right out of the box, leading to continued poor performance, bad fuel economy, or a persistent check engine light. Investing in a quality brand like Denso or Hitachi is often cheaper in the long run.
Helpful Videos
Technical Specifications
OEM Part Numbers: 37980-R40-A01 37980-RLF-013 37980-R11-A01 37980-R11-A02
5-pin, hot-wire type sensor. Part numbers may vary between 2.0L and 2.4L engines on 2013-2015 models. Always verify fitment with your vehicle's VIN.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Acura ILX:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Acura ILX Running Poorly? It Could Be the MAF Sensor
- First, Check for Simple Fixes
- Symptoms of a Failing Acura ILX MAF Sensor
- Choosing the Right Aftermarket MAF Sensor for Your ILX
- Tier 1: OEM-Equivalent Brands
- Tier 2: Reputable Aftermarket Brands
- Tier 3: Budget-Friendly Brands
- A Note on Engine Differences
- Cost of Replacing an Acura ILX MAF Sensor
- Frequently Asked Questions
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