Acura TL Manifold Absolute Pressure (MAP) Sensor Guide (2004-2014)
Diagnose and fix a rough idle, poor fuel economy, and hesitation in your 3rd or 4th generation Acura TL by understanding its MAP sensor.
- A bad MAP sensor on your TL will most likely trigger a P0107 or P0108 check engine light code.
- Denso is the Original Equipment Manufacturer (OEM) for this part; buying a Denso aftermarket sensor is a smart way to get dealer quality for less.
- Replacement is extremely easy and accessible on top of the engine, making it a great DIY task for any skill level.
- Always check for simple issues like vacuum leaks first, as they can cause the same symptoms as a failed sensor.
Is Your Acura TL's MAP Sensor Failing?
A faulty Manifold Absolute Pressure (MAP) sensor can cause a variety of frustrating engine problems. Because it provides key data for the air-fuel mixture, a bad sensor can make your TL run poorly. Symptoms often appear gradually and can be mistaken for other issues, but they typically point to the engine not getting the right instructions for combustion.
🎬 Watch: A clear explanation of bad MAP sensor symptoms.Symptoms of a Bad MAP Sensor
If your TL's MAP sensor is failing, you'll likely notice one or more of these signs. The most definitive sign is a Check Engine Light accompanied by specific diagnostic trouble codes (DTCs).
- Check Engine Light: The most common codes for a failing MAP sensor are P0107 (Circuit Low Voltage) and P0108 (Circuit High Voltage). 🎬 See how to test and replace the sensor for these codes.
- Rough Idle: The engine may shake or vibrate at idle because the computer can't stabilize the air-fuel ratio.
- Hesitation or Sluggish Acceleration: You may notice a delay or lack of power when you press the gas pedal.
- Poor Fuel Economy: If the sensor sends incorrect data, the ECU may inject more fuel than necessary, causing you to visit the gas station more often.
- Black Smoke from Exhaust: This is a sign that the engine is running too rich (too much fuel), which can be caused by a faulty MAP sensor reading.
- Stalling: In more severe cases, the engine may stall when coming to a stop or at low speeds.
Choosing the Right Aftermarket MAP Sensor
For the 2004-2014 Acura TL, you don't need to buy a genuine Acura part from the dealer to get OEM quality. The original sensor was made by Denso.
- Tier 1 (OEM or Equivalent): Denso is the original equipment manufacturer for this part. Choosing a Denso-branded sensor from the aftermarket is the same as getting the original part without the dealership markup. NGK/NTK is another top-tier brand known for making OE-quality sensors with extensive testing.
- Tier 2 (Trusted Aftermarket): Brands like Delphi, Standard Ignition (SMP), and Hella offer reliable replacements that are tested to meet or exceed OE standards. They are a solid choice if a Denso or NGK part is not available.
- Tier 3 (Budget-Friendly): Brands like Walker Products, Holstein, and others offer a low-cost alternative. While functional, they may not have the same long-term durability or precise calibration as the higher-tier brands. For a critical sensor like this, sticking with Tier 1 or 2 is recommended for the best performance and longevity.
Cost of Replacing an Acura TL MAP Sensor
| Part Type | Cost Range |
|---|---|
| New OEM (Dealer) | $70 - $145 |
| New Aftermarket | $25 - $116 |
| Shop Labor | $35 - $55 |
Installation & Known Issues
Replacing the MAP sensor on a 2004-2014 Acura TL is a very simple DIY job that takes less than 15 minutes.
- Locate the Sensor: It is mounted directly on the throttle body or intake manifold, right on top of the engine.
- Disconnect: Unplug the single electrical connector.
- Remove: Unscrew the one or two Phillips head screws holding it in place. Use a quality screwdriver and firm pressure to avoid stripping them.
- Install: Seat the new sensor with its O-ring, reinstall the screws, and plug the connector back in. 🎬 Watch this quick maintenance walkthrough for the Acura TL.
There are no recalls or common Technical Service Bulletins (TSBs) for the MAP sensor on this generation of Acura TL. Failures are typically due to age and heat cycles.
Frequently Asked Questions
Can I clean my MAP sensor instead of replacing it?
While some people attempt to clean the sensor with electronics cleaner, it is generally not recommended as a permanent fix. The sensor is a sealed electronic unit, and failure is usually internal. Cleaning will not repair a failed electronic component, and replacement is the only reliable solution.
What is an idle learn procedure?
After replacing the sensor, it's a good idea to perform an idle learn procedure. Simply start the car with all accessories (radio, A/C, lights) turned off and let it idle until the engine's cooling fans turn on and off twice. This allows the ECU to recalibrate to the new sensor's readings.
Is there a difference between a MAP and a MAF sensor?
Yes. A MAP sensor measures air pressure in the intake manifold. A Mass Air Flow (MAF) sensor measures the volume and density of air entering the engine. Your Acura TL uses both to get a complete picture of engine operating conditions. They are different parts with different functions.
Will a bad MAP sensor cause my car to fail an emissions test?
Yes, almost certainly. A bad MAP sensor will cause a Check Engine Light, which is an automatic failure. It also leads to an incorrect air-fuel ratio, which increases harmful emissions.
Helpful Videos
Technical Specifications
OEM Part Numbers: 37830-PGK-A01 37830-PNC-003 37830-RNA-A01
The sensor is a 3-pin electronic component that mounts to the intake manifold or throttle body, secured by one or two screws, and includes an O-ring for sealing.
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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.
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