Jeep Wrangler (2019-2024) Manifold Absolute Pressure Sensor: A Guide
Experiencing rough idle or poor gas mileage? Your Wrangler's MAP sensor could be the culprit.
- A bad MAP sensor causes poor fuel economy, rough idle, and hesitation; on 2.0L turbo models, it can trigger limp mode.
- Always check for vacuum leaks before replacing the sensor, as symptoms are nearly identical.
- Replacement is an easy DIY job, typically requiring only a T-25 Torx bit and about 30 minutes.
- Premium aftermarket brands like Delphi, NGK, and Standard Ignition offer reliable quality without the full OEM price.
Is Your Wrangler's MAP Sensor Failing?
A bad Manifold Absolute Pressure (MAP) sensor can cause a range of frustrating issues. Because it directly impacts the air-fuel mixture, a faulty sensor can make your Wrangler run poorly without setting obvious, specific codes. Many owners replace the sensor only to find the problem was a simple vacuum leak, so a thorough diagnosis is key.
Check for Vacuum Leaks First!
Symptoms of a bad MAP sensor are very similar to those of a vacuum leak in the intake system. Before spending money on a new sensor, have a mechanic perform a smoke test to check for cracked hoses or bad intake manifold gaskets. This is a common issue and can save you from replacing a part that isn't broken.
Common Symptoms of a Bad MAP Sensor
- Check Engine Light: The most obvious sign. Codes like P0105, P0106, P0107, or P0108 are common.
- Poor Fuel Economy: The engine may run too rich, burning more gas than necessary.
- Rough Idle: The engine may vibrate, and the RPMs might fluctuate at a stop.
- Hesitation or Sluggish Acceleration: You'll notice a lack of power when you step on the gas.
- Engine Stalling: In more severe cases, the engine may stall shortly after starting or when coming to a stop.
- Limp Mode (2.0L Turbo): Owners of the 2.0L turbo engine report that a MAP sensor failure can trigger multiple dash warnings (like for the electronic stability control) and force the vehicle into a low-power limp mode.
Choosing the Right Aftermarket MAP Sensor
You don't have to buy from the dealer to get a quality part. Aftermarket brands offer a range of options, but quality can vary. For a critical sensor like this, it's wise to stick with reputable brands.
| Brand Tier | Brands | Assessment |
|---|---|---|
| Premium Aftermarket | Delphi, NGK/NTK, Standard Ignition | These brands are well-regarded in the industry and by mechanics for producing reliable sensors that perform like the original OEM part. They are an excellent choice for a dependable, long-lasting repair. |
| Standard / Value | Walker Products, Holstein | These brands offer a more budget-friendly price point. While they can be a good value, some user forums mention occasional issues with out-of-the-box quality or longevity compared to premium brands. They can be a viable option if budget is the primary concern. |
Technical Service Bulletin for 2.0L Turbo
Jeep issued TSB 18-114-22 for 2019 Wranglers with the 2.0L engine. It addresses a software update for the Powertrain Control Module (PCM) to fix issues that can set various trouble codes, including some related to the turbocharger inlet pressure sensor (P012A, P012C, P012D). If you have a 2.0L, it's worth checking with a dealer to see if this software update has been performed on your vehicle.
Cost of Replacing a Jeep Wrangler MAP Sensor
| Part/Service | Estimated Cost |
|---|---|
| New OEM (Mopar) Part | $62 - $143 |
| New Aftermarket Part | $26 - $85 |
| Shop Labor | $73 - $107 |
| Total Professional Replacement | $135 - $360 |
Frequently Asked Questions (FAQ)
Where is the MAP sensor on my 2019-2024 Wrangler?
The sensor is located on the intake manifold, but the exact spot differs by engine. On the 3.6L V6, it's typically on the top rear of the intake manifold. On the 2.0L Turbo, it's a combined Temperature/MAP sensor that is often harder to access, sometimes requiring the removal of a purge solenoid mounted above it to reach the mounting bolt.
🎬 See this walkthrough for accessing sensors on the 2.0L TurboCan I just clean my MAP sensor?
Sometimes, yes. If the sensor is dirty with oil or carbon buildup, cleaning it with a dedicated Mass Airflow (MAF) or electronics sensor cleaner 🎬 Watch: How to locate, remove, and clean your MAP sensor might restore its function. However, if the sensor has failed electrically, cleaning will not help, and it must be replaced.
Do I need to disconnect the battery to replace the sensor?
It is highly recommended. Disconnecting the battery for about 10-15 minutes after installing the new sensor helps reset the engine computer's adaptive memory. This allows the computer to learn the new sensor's parameters quickly and ensures smooth operation.
What tools are needed for the replacement?
This is a simple job for most DIYers. You will typically only need a T-25 Torx bit and a small ratchet to remove the bolt holding the sensor in place. A small flathead screwdriver can be helpful for releasing the red locking tab on the electrical connector.
Helpful Videos
Technical Specifications
OEM Part Numbers: 68371847AA 68490034AA 68212571AA 68428449AA 68275301AA
The MAP sensor for the 2019-2024 Jeep Wrangler is a 3-pin or 4-pin sensor that mounts directly to the intake manifold. On 2.0L Turbo engines, this is often a combined Temperature and Pressure sensor (T/MAP).
We Have This Part in Stock
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.
- Jeep Wrangler:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Wrangler's MAP Sensor Failing?
- Check for Vacuum Leaks First!
- Common Symptoms of a Bad MAP Sensor
- Choosing the Right Aftermarket MAP Sensor
- Technical Service Bulletin for 2.0L Turbo
- Cost of Replacing a Jeep Wrangler MAP Sensor
- Frequently Asked Questions (FAQ)
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