2008-2012 Ford Taurus Transmission Output Shaft Speed Sensor Replacement Guide
Solve erratic shifting and speedometer problems in your Taurus by understanding and choosing the right replacement sensor.
- A failing OSS sensor is a common cause of harsh shifting and erratic speedometer readings in the 2008-2012 Taurus.
- Look for diagnostic trouble code P0720, which specifically points to a malfunction in the output speed sensor circuit.
- Replacement is DIY-friendly for the externally mounted sensor, but access is tight and requires removing the airbox.
- Using an OEM Motorcraft part or a high-quality aftermarket brand like NGK or Standard Ignition is recommended for reliability.
Is a Failing Output Speed Sensor Causing Your Taurus's Transmission Problems?
If your 2008-2012 Ford Taurus has started shifting harshly or your speedometer is acting up, a faulty Automatic Transmission Output Shaft Speed Sensor (OSS) is a likely culprit. This sensor provides essential speed data to your car's computer, and when it fails, it can cause a number of noticeable and concerning issues. Ignoring these symptoms can lead to unsafe driving conditions and potentially put extra stress on your transmission's internal components.
Symptoms of a Bad OSS Sensor
A failing output speed sensor will usually make its presence known through several distinct symptoms. You might experience one or more of the following:
- Harsh & Erratic Shifting: This is the most common complaint. Your Taurus might slam into gear, especially when accelerating from a stop. You may also feel a hard bump or shudder between shifts.
- Speedometer Not Working: The speedometer needle may jump around wildly, show a speed that is clearly wrong, or drop to zero while you're driving.
- Check Engine Light: A faulty OSS sensor will trigger the Check Engine Light. A code scan will typically reveal codes like P0720 (Output Speed Sensor Circuit Malfunction), P0721, P0722, or P0723. 🎬 See this guide on diagnosing and fixing the P0722 code.
- Sluggish Acceleration: The car may feel like it's stuck in a high gear, especially after coming to a stop. This results in very slow and hesitant acceleration.
- Cruise Control Disabled: As a safety measure, the vehicle's computer will usually disable the cruise control system when it can't get a reliable speed reading from the OSS.
Choosing the Right Aftermarket Sensor
When replacing the OSS sensor, you have a few quality brands to choose from. While some drivers prefer to stick with OEM parts, high-quality aftermarket options can offer reliable performance at a good value.
Motorcraft (OEM): As the original equipment manufacturer for Ford, Motorcraft is the benchmark for fit and performance. Choosing Motorcraft guarantees that the part meets the exact specifications Ford intended. For critical electronic sensors, sticking with the OEM brand is often the safest bet to avoid any compatibility issues.
NGK: NGK is a highly respected brand, known for producing OEM-quality ignition parts and sensors for many car manufacturers. In some cases, they are the original supplier for the factory part. An NGK sensor is a top-tier aftermarket choice that you can trust to perform reliably in your Taurus.
Standard Ignition (Standard Motor Products): Standard is a well-known aftermarket manufacturer that produces a huge range of automotive parts. Their sensors are designed to be direct-fit replacements and are tested to ensure they provide an accurate signal just like the original part. This brand represents a solid, dependable choice for a new aftermarket sensor.
Cost at a Glance
| Part Type | Estimated Cost |
|---|---|
| New OEM (Motorcraft) | $60 - $90 |
| New Aftermarket (NGK, Standard Ignition) | $67.91 - $88.32 |
| Shop Labor | $100 - $300 |
Pro Tip: Check for Other Issues
While the OSS sensor is a common failure point, symptoms like harsh shifting can also be caused by other transmission problems. Ford has issued Technical Service Bulletins (TSBs) for the 6F50 transmission related to valve body issues 🎬 Watch a professional removal and installation for the 6F50 transmission. and software calibrations that can cause similar symptoms. If a new sensor doesn't fix the problem, the issue may lie deeper within the transmission or its control module.
Frequently Asked Questions
Can I replace the output speed sensor myself?
Yes, this is a DIY-feasible job for someone with basic mechanical skills. The sensor is typically located on the top of the transmission housing, behind the engine. Access is tight, and you will likely need to remove the engine airbox to reach it. 🎬 Watch this DIY walkthrough for replacing the Taurus speed sensor. The sensor is held in by a single bolt.
Is it safe to drive with a bad output speed sensor?
It is not recommended. The transmission may shift unpredictably, fail to accelerate from a stop, or cause the engine to stall. These behaviors can create a serious safety hazard, so it's best to get the sensor replaced as soon as possible.
How do I know if it's the sensor or the whole transmission?
A diagnostic scan tool is the best way to check. If you have a code like P0720, it points directly to a problem in the output speed sensor circuit. Since the sensor is a relatively inexpensive part and a common point of failure, replacing it first is a logical step before suspecting a more serious internal transmission problem.
Are there any recalls for this sensor on my Taurus?
No, there are no specific recalls for the Automatic Transmission Output Shaft Speed Sensor on the 2008-2012 Ford Taurus. Recalls for this vehicle have focused on other issues like airbags.
Helpful Videos
Technical Specifications
OEM Part Numbers: DY-1221
Fits the 6F50 6-speed automatic transmission used in 2008-2012 Ford Taurus models. The sensor is an electronic component with a specific connector and O-ring seal.
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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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