Acura RSX Manifold Absolute Pressure (MAP) Sensor Guide (2002-2006)
Experiencing rough idle, poor gas mileage, or a check engine light in your RSX? Your MAP sensor could be the culprit.
- A bad MAP sensor on an RSX will almost always trigger a Check Engine Light with codes P0107 or P0108.
- Replacement is extremely easy and accessible, located on the throttle body, making it a great DIY repair.
- For sensor replacements on a Honda/Acura, it is highly recommended to use the OEM brand (Denso) or a top-tier aftermarket brand like Delphi or Standard (SMP) to ensure reliability.
- There are no recalls for this specific part; failures are due to normal wear and tear on the electronic component.
Is Your Acura RSX MAP Sensor Failing?
The MAP sensor on the Acura RSX is a common failure point as the vehicle ages. When it fails, it sends incorrect data to the engine's computer, leading to a variety of noticeable performance issues. Because it's a critical sensor, symptoms usually appear quickly and shouldn't be ignored.
Symptoms of a Bad MAP Sensor in a 2002-2006 Acura RSX
If your MAP sensor is going bad, you'll likely experience one or more of the following issues:
🎬 Watch: Symptoms of a bad MAP sensor explained clearly.- Check Engine Light: This is the most common symptom. The ECU will trigger a Check Engine Light and store a trouble code, most often P0107 or P0108. 🎬 See how to diagnose these specific MAP sensor trouble codes.
- Rough Idle: The engine may vibrate, stumble, or sound unstable when the car is stopped.
- Poor Fuel Economy: A bad sensor can cause the ECU to inject too much fuel, leading to more frequent trips to the gas station.
- Hesitation or Sluggish Acceleration: Your RSX may feel weak or slow to respond when you press the gas pedal.
- Black Smoke from Exhaust: This is a sign of a rich fuel mixture (too much fuel), which can be caused by a faulty MAP sensor telling the ECU the engine is under more load than it is.
- Failed Emissions Test: Incorrect air-fuel ratios will lead to higher-than-normal emissions.
Known Issues, Recalls & TSBs
As of early 2026, there are no specific recalls or Technical Service Bulletins (TSBs) issued by Acura or the NHTSA for the Manifold Absolute Pressure sensor on the 2002-2006 Acura RSX. Failure is typically due to age and electronic component wear.
Choosing the Right Aftermarket MAP Sensor for Your RSX
When it comes to engine sensors for Honda and Acura vehicles, not all brands are created equal. While OEM is always a safe bet, several aftermarket brands offer a good balance of quality and value.
Brand Quality Tiers
- OEM / Premium Aftermarket: Denso is the original equipment manufacturer for many Honda/Acura parts, making it a top choice for a direct replacement. Delphi, NGK/NTK, and Standard Ignition (SMP) are also highly reputable brands known for producing quality sensors that meet or exceed OEM specifications. These are your best bet for reliability and longevity.
- Quality Aftermarket: Brands like Hella, Spectra, and Walker Products often provide a reliable part at a more accessible price point. They are generally considered a step up from basic budget options.
- Budget-Friendly: Brands such as Facet, Global Parts, and Holstein fall into the budget category. While the price is attractive, reliability can be inconsistent. For a critical sensor like the MAP, it's often worth spending a little more to avoid potential performance issues or a premature failure.
- Performance Upgrade: Skunk2 Racing offers upgraded MAP sensors (e.g., 4-Bar) designed for modified cars with forced induction (turbo or supercharger). This is NOT a standard replacement and requires specific ECU tuning. Do not use this on a stock or lightly modified engine.
| Part Type | Estimated Cost |
|---|---|
| New OEM (Acura/Denso) | $90 - $145 |
| New Aftermarket | $25 - $116 |
| Shop Labor | $50 - $100 |
Pro Tip: DIY Installation
Replacing the MAP sensor on an RSX is an excellent DIY job for beginners. It's located right on top of the throttle body, held on by a single 10mm bolt or two Phillips head screws. The entire job takes less than 15 minutes with basic tools. Unplug the connector, unscrew the old sensor, install the new one, and reconnect it.
🎬 Watch this simple DIY guide for testing your MAP sensor.Frequently Asked Questions (FAQ)
Can I just clean my RSX MAP sensor?
While you can try cleaning the sensor port with a dedicated electronic or MAF/MAP sensor cleaner, it's often a temporary fix. The failure is usually electronic and internal. If you're getting persistent MAP sensor codes, replacement is the only reliable solution.
What's the difference between OEM part numbers 37830-PGK-A01 and 37830-PNC-003?
Both part numbers are listed for the 2002-2006 RSX. 37830-PGK-A01 is the most commonly cited replacement part for this generation. Both are functionally identical for a stock replacement, but it's always best to use a part that is confirmed to fit your specific model year.
Do I need to reset the ECU after replacing the MAP sensor?
It's a good practice. After replacing the sensor, you can clear the check engine light with an OBD-II scanner. Alternatively, you can disconnect the negative battery terminal for about 10 minutes to reset the ECU. This forces the computer to relearn its fuel and idle parameters with the new, accurate sensor data. An idle relearn procedure may also be beneficial.
Is a cheap aftermarket MAP sensor worth the risk?
For a critical sensor on a Honda/Acura engine, it's generally not recommended. Cheaper sensors can have lower quality electronics, leading to inaccurate readings, poor performance, or a short lifespan, costing you more in the long run. Sticking with a reputable brand like Denso, Delphi, or Standard is a safer investment.
Helpful Videos
Technical Specifications
OEM Part Numbers: 37830-PGK-A01 37830-PNC-003
3-pin electrical connector, mounts to throttle body.
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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 RSX:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Acura RSX MAP Sensor Failing?
- Symptoms of a Bad MAP Sensor in a 2002-2006 Acura RSX
- Known Issues, Recalls & TSBs
- Choosing the Right Aftermarket MAP Sensor for Your RSX
- Brand Quality Tiers
- Pro Tip: DIY Installation
- Frequently Asked Questions (FAQ)
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