Manifold Absolute Pressure (MAP) Sensor Guide for the 2014-2016 Cadillac ELR
Understand the symptoms of a failing MAP sensor and find the right replacement for your ELR's 1.4L engine.
- A faulty MAP sensor causes a check engine light, rough running, and poor fuel economy on the ELR's gas engine.
- Replacement is very easy and can be done in under 30 minutes with a single T25 Torx driver.
- Always check for vacuum leaks first, as they can cause identical symptoms.
- High-quality aftermarket brands like Bosch and Delphi offer a reliable alternative to the OEM part.
Is Your Cadillac ELR Running Rough? It Could Be the MAP Sensor
If your 2014-2016 Cadillac ELR is experiencing a sudden drop in performance, rough idling, or poor fuel economy when the gasoline engine is running, a faulty Manifold Absolute Pressure (MAP) sensor could be the culprit. This sensor is a key part of the engine management system, and when it fails, it can cause noticeable problems. Fortunately, this is a straightforward and affordable part to replace.
Symptoms of a Failing MAP Sensor
A bad MAP sensor will almost always trigger a check engine light and cause performance issues. Before replacing the sensor, it's wise to rule out other potential causes, like a vacuum leak, which can produce similar symptoms. Common signs of failure include:
- Check Engine Light: The most common indicator, often with codes like P0106, P0107, or P0108.
- Poor Engine Performance: You may notice sluggish acceleration and a general lack of power.
- Rough Idle: The engine may shake or idle unevenly when the gasoline generator is active.
- Increased Fuel Consumption: An incorrect sensor reading can cause the engine to run rich, burning more fuel than necessary.
- Engine Stalling: In some cases, a faulty MAP sensor can cause the engine to stall unexpectedly.
- Failed Emissions Test: Incorrect air-fuel mixtures can lead to high levels of pollutants in the exhaust.
First, Check for Vacuum Leaks
Forum discussions with ELR owners show that a vacuum leak in the intake system can cause the same symptoms as a bad MAP sensor. Before spending money on a new sensor, have the intake system checked for leaks. A mechanic can perform a smoke test to quickly find any leaking hoses or gaskets.
Choosing the Right Aftermarket MAP Sensor for Your ELR
Since the Cadillac ELR shares its 1.4L engine with the more common Chevrolet Volt and Cruze, there is a healthy selection of aftermarket parts available. These brands are generally grouped into tiers based on their market position and reputation.
Premium & OEM-Equivalent Brands
These brands are often original equipment manufacturers for major car companies and are known for their quality and reliability. They are a safe bet for a critical sensor.
- Bosch: A well-respected German company and a known OE supplier. Bosch MAP sensors are described as having high-quality construction and providing accurate measurements.
- Delphi: Another top-tier OEM supplier with a strong reputation for quality electronics.
- NGK: While famous for spark plugs and oxygen sensors, NGK also produces a line of engine management sensors that are held to a high standard.
- AC Delco: This is the official GM Original Equipment part. If you want the exact part your ELR came with, this is the one to get.
Quality Aftermarket Brands
These brands focus on the aftermarket and offer a balance of quality and price. They are a popular choice for DIY repairs.
- Standard Ignition (SMP): A major manufacturer with broad coverage. They state their sensors are engineered for precision and durability. However, customer reviews can be mixed, with some reporting early failures.
- Walker Products: Walker has been in the fuel and engine management business for decades and claims its parts meet or exceed OEM standards.
Budget-Friendly Brands
Brands like Facet, Global Parts, and True Tech typically fall into this category. They offer a lower price point, which can be appealing for budget-conscious repairs. While they can function correctly, they may not have the same long-term durability or precise calibration as premium brands.
DIY Replacement is Fast and Easy
Replacing the MAP sensor on the ELR's 1.4L engine is a great job for a beginner. It is located directly on the intake manifold, held in by a single T25 Torx screw. The entire job can be done in under 30 minutes with basic tools.
Cost of Replacing a MAP Sensor on a 2014-2016 Cadillac ELR
| Part Type | Part Cost | Shop Labor Cost | Total Estimated Cost |
|---|---|---|---|
| New Aftermarket | $39 - $68 | $60 - $120 | $99 - $188 |
| New OEM (AC Delco) | $30 - $85 | $60 - $120 | $90 - $205 |
Frequently Asked Questions
Are there any recalls for the Cadillac ELR MAP sensor?
No, there are no specific recalls for the MAP sensor on the 2014-2016 Cadillac ELR. There was a GM Preliminary Information (PI) bulletin issued to technicians regarding MAP sensor issues, which indicates it's a recognized problem, but not one that prompted a full safety recall.
Where is the MAP sensor located on the Cadillac ELR?
The MAP sensor is located on the top of the plastic intake manifold of the 1.4L gasoline engine. It is easily accessible after removing the decorative engine cover and is held in place by a single screw.
Can I just clean my MAP sensor?
Sometimes, cleaning a MAP sensor with a dedicated electronics or MAF sensor cleaner can restore its function, especially if it's contaminated with oil or carbon. However, if the sensor's internal electronics have failed, cleaning will not help, and replacement is the only solution.
What happens if I don't replace a bad MAP sensor?
Continuing to drive with a faulty MAP sensor is not recommended. Persistently running a rich air-fuel mixture can lead to long-term damage to your catalytic converter, which is a much more expensive repair. You will also experience poor performance, bad fuel economy, and potential stalling.
Technical Specifications
OEM Part Numbers: 55563375
3-pin connector, single-bolt mount.
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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.
- Cadillac ELR:
- 🛍️ Shop This Part
- Is Your Cadillac ELR Running Rough? It Could Be the MAP Sensor
- Symptoms of a Failing MAP Sensor
- First, Check for Vacuum Leaks
- Choosing the Right Aftermarket MAP Sensor for Your ELR
- Premium & OEM-Equivalent Brands
- Quality Aftermarket Brands
- Budget-Friendly Brands
- DIY Replacement is Fast and Easy
- Cost of Replacing a MAP Sensor on a 2014-2016 Cadillac ELR
- Frequently Asked Questions
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