Manifold Absolute Pressure (MAP) Sensor for the 2011-2015 Chevrolet Volt
Understand the critical role of the MAP sensor in your Volt's unique powertrain and how to choose the right replacement.
- A faulty MAP sensor will cause noticeable engine problems like rough idling, poor acceleration, and reduced fuel economy.
- The most common diagnostic code is P0106, which points to a MAP sensor performance issue.
- Replacement is a simple DIY task for most owners, located on the intake manifold.
- Before replacing the sensor, check for vacuum leaks, as they can cause similar symptoms.
Symptoms of a Failing MAP Sensor
When the MAP sensor on your Volt starts to fail, it can cause a variety of noticeable issues because the engine's computer receives incorrect information about engine load. This can lead to an improper air-fuel mixture, which can be either too rich (too much fuel) or too lean (not enough fuel).
Common Warning Signs:
- Check Engine Light: This is often the first indicator. A scan tool may show codes like P0106, which points to a MAP sensor performance problem.
- Poor Fuel Economy: If the engine runs rich, you'll notice a significant drop in your gas mileage.
- Rough Idle and Stalling: The engine may run unevenly or stall completely, especially when stopped.
- Reduced Power and Sluggish Acceleration: Your Volt may feel hesitant or slow to respond when you press the accelerator.
- Black Smoke from Exhaust: This is a clear sign of a rich fuel mixture, where unburned fuel is exiting through the exhaust.
- Failed Emissions Test: An incorrect air-fuel ratio will almost certainly lead to increased emissions.
Choosing the Right Aftermarket MAP Sensor
For the 2011-2015 Chevrolet Volt, you have several aftermarket MAP sensor options. The quality can vary, so it's important to understand the differences.
OEM vs. Aftermarket Quality:
The original equipment (OE) sensor is made by ACDelco, which is GM's own parts brand. Aftermarket sensors are designed to be direct replacements, but they aren't all created equal. For a critical sensor like the MAP, sticking to reputable brands is your best bet. While some owners prefer to stick with OEM parts for electronics, high-quality aftermarket brands can offer comparable performance and reliability at a better price. Forum discussions sometimes suggest that for critical sensors, paying a little more for a well-known brand or even the OEM part can prevent future headaches.
Pro Tip: Before replacing the sensor, it's wise to check for vacuum leaks. A cracked or loose vacuum hose can cause symptoms identical to a failing MAP sensor and is a much simpler fix.
Brand Tiers:
- Premium Brands (Bosch, Delphi, NGK, Standard Ignition): These are often OE suppliers for various car manufacturers and have a strong reputation for quality and reliability. Delphi, for example, has been making mass air flow sensors for over 30 years and their parts are calibrated to match OE specifications. Bosch is another top-tier brand known for its quality pressure sensors. Standard Motor Products (SMP) and NGK (NTK Sensors) also produce high-quality sensors engineered to meet or exceed OE standards.
- Standard/Value Brands (Spectra, Walker Products, Facet, Global Parts, True Tech): These brands provide a more budget-friendly option. While they can be a good value, their longevity and performance consistency might not always match the premium brands. For a part as crucial as the MAP sensor, it's often recommended to opt for a premium brand if your budget allows.
| Part Type | Estimated Cost Range |
|---|---|
| New OEM (ACDelco) | $45 - $70 |
| New Aftermarket | $39.20 - $67.73 |
| Shop Labor | $50 - $100 |
Frequently Asked Questions (FAQ)
Is it difficult to replace the MAP sensor on a 2011-2015 Volt?
No, it is generally considered an easy repair. The sensor is located on the intake manifold and is typically held in by one or two bolts. It's a plug-and-play component, making it a feasible DIY job for those with basic tools. Disconnecting the battery beforehand is always a good safety measure.
Are there any recalls for the MAP sensor on the Gen 1 Volt?
No specific recalls for the Manifold Absolute Pressure sensor were found for the 2011-2015 Chevrolet Volt. However, a Technical Service Bulletin (TSB) exists for some GM vehicles that mentions DTC P0106 and recommends replacing the MAP sensor.
Can I just clean my MAP sensor instead of replacing it?
Unlike a Mass Airflow (MAF) sensor, which can sometimes be cleaned, a MAP sensor is more sensitive. Contamination is a common cause of failure, but attempting to clean it can easily cause damage. Replacement is the recommended and most reliable solution.
What is the difference between a MAP sensor and a MAF sensor?
A MAP sensor measures air pressure in the intake manifold, while a Mass Airflow (MAF) sensor measures the volume and density of the air entering the engine. Some vehicles use one or the other, and some, particularly turbocharged engines, use both. The 2011-2015 Volt uses a MAP sensor to help determine engine load.
Technical Specifications
OEM Part Numbers: 55573248 12591290 93192107
Bolt-on type sensor with a 3-pin electrical connector.
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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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