Ram 2500 Manifold Absolute Pressure (MAP) Sensor Guide for 2011-2019
Everything a Ram 2500 owner needs to know about a failing MAP sensor and how to choose the right replacement.
- A failing MAP sensor will usually trigger a Check Engine Light with codes like P0106.
- Symptoms include rough idle, poor fuel economy, and black smoke on diesel models.
- Replacement is simple and can be done by a DIYer in under 30 minutes.
- For Cummins engines, using a high-quality aftermarket (like Delphi, NGK) or OEM Mopar sensor is recommended for reliability.
Symptoms of a Failing MAP Sensor
When a MAP sensor starts to fail on a 2011-2019 Ram 2500, the signs can range from subtle to severe. Because the sensor provides bad data to the engine's computer, you may notice several performance issues. Ignoring these symptoms can lead to poor fuel economy, failed emissions tests, and potentially long-term engine damage.
🎬 Watch: A clear explanation of common bad MAP sensor symptoms.Watch for These Signs
- Check Engine Light: This is the most common sign. The sensor will trigger a fault code, often P0106, P0107, or P0108.
- Poor Engine Performance: You might experience rough idling, hesitation or jerking during acceleration, and a general lack of power.
- Bad Fuel Economy: An incorrect sensor reading can cause the engine to use more fuel than necessary.
- Black Smoke: Especially on Cummins diesel models, a bad MAP sensor can cause a rich fuel condition, leading to black smoke from the exhaust.
- Hard Starting or Stalling: In more severe cases, the truck may be difficult to start or may stall unexpectedly.
Choosing the Right Aftermarket MAP Sensor
When replacing the MAP sensor on your Ram 2500, you have a choice between OEM (Mopar) and various aftermarket brands. For a critical sensor like this, quality matters, but that doesn't always mean you have to pay dealer prices.
Brand Quality Tiers
Not all aftermarket parts are created equal. Here’s a breakdown of the brands available to help you make an informed decision.
- Premium Aftermarket (OEM Equivalents): Brands like Delphi, NGK/NTK, and Standard Ignition (SMP) are often original equipment suppliers to many automakers. Their sensors are engineered to meet or exceed OE specifications and are considered a reliable, cost-effective alternative to Mopar.
- Quality Aftermarket: Brands such as Holstein and Walker Products offer a good balance of quality and price. They are dependable choices for a daily driver and are a significant step up from basic, unbranded parts.
- Value-Oriented: Brands like Crown Automotive, Spectra, and Global Parts provide a functional replacement at a lower price point. While they can get the job done, their long-term durability may not match that of the premium brands. Forum discussions sometimes show mixed results with the cheapest options, with some owners reporting premature failures.
Pro Tip: For the 6.7L Cummins engine, which relies heavily on accurate pressure readings for turbo performance, investing in a premium aftermarket or OEM Mopar sensor is highly recommended to avoid future headaches.
Cost to Replace a Ram 2500 MAP Sensor
The cost of replacement involves the part itself and labor if you're not doing it yourself. The job is straightforward for a DIYer with basic tools.
| Item | Estimated Cost |
|---|---|
| New OEM (Mopar) | $180 - $330 |
| New Aftermarket | $26 - $136 |
| Shop Labor | $42 - $140 |
Frequently Asked Questions (FAQ)
Is it difficult to replace the MAP sensor on a 2011-2019 Ram 2500?
No, it is generally an easy replacement. The sensor is usually located on the intake manifold and held in place by one or two bolts. The process involves disconnecting the electrical connector, removing the bolts, swapping the sensor, and reconnecting everything. It typically takes less than 30 minutes.
🎬 Watch this quick walkthrough of the MAP sensor replacement process.Are there any recalls for the MAP sensor on the Ram 2500?
Based on searches of the NHTSA database, there are no specific safety recalls for the Manifold Absolute Pressure sensor itself on 2011-2019 Ram 2500 models. There are recalls for other engine and emissions components, but not the MAP sensor directly.
Can I just clean my MAP sensor instead of replacing it?
While some sensors can be cleaned, it is generally not recommended for MAP sensors. They can become contaminated with oil and carbon, but cleaning attempts can damage the delicate internal components. Given the relatively low cost of a new aftermarket sensor and the critical role it plays, replacement is the safest option.
🎬 See how to maintain and clean your Cummins TMAP sensor.What's the difference between a MAP sensor and a MAF sensor?
A MAP (Manifold Absolute Pressure) sensor measures pressure in the intake manifold. A MAF (Mass Air Flow) sensor measures the volume and density of air entering the engine. Your Ram 2500 uses a MAP sensor as a primary input for its calculations, especially on the Cummins diesel models to measure boost pressure.
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Technical Specifications
OEM Part Numbers: 68447684AB 68453737AA 68005161AB 68282012AA 2897334
The MAP sensor on the Ram 2500, particularly the 6.7L Cummins models, is a combination sensor that often measures both boost pressure and intake air temperature. It provides a variable voltage signal to the Engine Control Module (ECM) corresponding to the pressure in the intake manifold.
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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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