Genesis G90 Manifold Absolute Pressure (MAP) Sensor: A 2017-2022 Guide
Understand the signs of a failing MAP sensor in your G90 and learn how to choose the right replacement part.
- A failing MAP sensor on a G90 typically triggers a P0106 check engine light code and causes rough running, hesitation, and poor fuel economy.
- Replacement is simple, DIY-friendly, and usually takes less than an hour.
- For best results, choose a premium aftermarket brand like Delphi, NGK, or Standard Ignition, as they are known OEM-quality suppliers.
- There are no known recalls or TSBs specifically for the MAP sensor on the 2017-2022 Genesis G90.
Is Your G90's MAP Sensor Failing?
A faulty Manifold Absolute Pressure (MAP) sensor can cause noticeable engine problems. Because it provides critical data for the air-fuel mixture, a bad sensor can disrupt your G90's smooth performance. Ignoring these symptoms can lead to poor fuel economy and potentially damage other components like spark plugs or the catalytic converter over time.
Key Failure Symptoms:
- Check Engine Light: This is often the first sign. The most common trouble code associated with a MAP sensor failure is P0106, which indicates a performance issue with the sensor's circuit.
- Poor Engine Performance: You might experience a rough idle, engine hesitation or surging, and a general lack of power. Some owners report a lurching or jerking feeling during acceleration.
- Reduced Fuel Economy: The engine's computer may inject too much fuel to compensate for bad sensor readings, causing you to use more gas than normal.
- Black Smoke from Exhaust: In some cases, an overly rich fuel mixture can result in black smoke coming from the tailpipe.
Can You Drive with a Bad MAP Sensor?
It is not recommended if you are experiencing serious performance issues. If the engine is surging, lurching, or stalling, the car can be unpredictable and unsafe to drive. If the only symptom is a steady Check Engine Light and the car drives normally, you can likely drive it to a repair shop, but you should get it diagnosed promptly.
Choosing the Right Aftermarket MAP Sensor
When replacing the MAP sensor on your 2017-2022 Genesis G90, you have options ranging from budget-friendly parts to those that meet or exceed original equipment (OE) quality. Since sensors provide critical data to your engine's computer, choosing a quality part is important for long-term reliability.
Aftermarket Brand Tiers
- Premium Aftermarket (OEM Quality): Brands like Delphi and NGK (NTK) are often original equipment manufacturers for many car brands, including Hyundai/Genesis. These parts are engineered to match the performance and durability of the factory sensor. Standard Ignition (Standard Motor Products) is another well-regarded brand known for producing reliable electronic components.
- Quality Aftermarket: Brands such as Walker Products, Spectra, and Holstein offer a balance of quality and value. They are dependable replacements for a daily driven vehicle and are a significant step up from basic economy parts.
- Economy Brands: Lesser-known brands like Global Parts, Skyward, and True Tech provide a low-cost solution. While functional, they may not offer the same long-term durability or precise calibration as premium brands.
A Note on OEM vs. Aftermarket
For a luxury vehicle like the Genesis G90, especially the twin-turbo model, investing in a premium aftermarket brand like Delphi or NGK is a wise choice. These brands have a strong reputation for quality control and often supply the original parts to the manufacturer. While an economy part will work, a premium sensor ensures the ECU receives the most accurate data for the smoothest performance.
Cost of Replacing the Genesis G90 MAP Sensor
The cost to replace the MAP sensor is reasonable, as the part is accessible and the labor is straightforward. Below are typical cost ranges you can expect.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $21 - $133 |
| New OEM Part | $75 - $218 |
| Shop Labor | $37 - $55 |
| Total Professional Replacement (Aftermarket) | $58 - $188 |
| Total Professional Replacement (OEM) | $112 - $273 |
Frequently Asked Questions
Where is the MAP sensor located on the Genesis G90?
The MAP sensor is typically mounted directly on the intake manifold. On the 3.3L twin-turbo engine, there may be more than one pressure sensor, so it's important to identify the correct one before replacement. It is a small, black plastic sensor held in place by a single bolt with an electrical connector attached.
Is this a difficult part to replace myself?
No, this is generally considered an easy DIY repair for those with basic tools. The process involves disconnecting the battery, unplugging the electrical connector, removing one bolt, and swapping the old sensor for the new one. The estimated time is under an hour.
Are there any recalls for the G90 MAP sensor?
Based on searches of the National Highway Traffic Safety Administration (NHTSA) database, there are no specific recalls or technical service bulletins (TSBs) for the MAP sensor on the 2017-2022 Genesis G90.
What happens if I don't replace a bad MAP sensor?
Continuing to drive with a faulty MAP sensor can lead to persistently poor fuel economy, rough engine operation, and increased emissions. Over time, running a consistently rich or lean fuel mixture can damage your spark plugs and catalytic converter, leading to more expensive repairs.
Technical Specifications
OEM Part Numbers: 39300-84400 39300-2G000
The MAP sensor for the Genesis G90 is a 4-pin, flange-mounted sensor that measures 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.
- Genesis G90: