Ford Explorer Engine Oil Pressure Switch: A Guide for 2012-2021 Models
Is your oil light flickering or gauge acting strange? Your Explorer's oil pressure switch could be the problem.
- A flickering oil light or erratic gauge is a classic sign of a failing oil pressure switch.
- Always check the oil level first and verify with a mechanical gauge before replacing parts to rule out a serious engine issue.
- Replacement is a simple DIY task, typically taking less than 30 minutes with basic tools.
- Motorcraft (OEM) is the most reliable choice, but reputable aftermarket brands offer a good value for this part.
Is Your Explorer's Oil Pressure Warning Light On?
When the oil pressure light comes on in your 2012-2021 Ford Explorer, it's easy to fear the worst. While it can signal a serious issue, it's often caused by a simple, inexpensive part: the engine oil pressure switch. This sensor can fail over time, giving false readings that trigger the light. Common signs of a failing switch include a flickering oil light, a gauge that reads zero or fluctuates wildly, or a small oil leak from the sensor itself.
Warning: Don't Ignore the Light!
Before assuming the switch is bad, always check your engine oil level immediately. If the level is good, the next step is to verify the actual engine oil pressure using a mechanical gauge. A warning light can also be a symptom of a more severe problem like a failing oil pump or other internal engine issues. Ignoring a true low-pressure situation can lead to catastrophic engine failure.
Choosing the Right Aftermarket Switch
When shopping for a replacement, you'll find both OEM (Original Equipment Manufacturer) and aftermarket options. Here’s how they compare for your Explorer:
- Motorcraft (OEM): This is Ford's own brand. Choosing Motorcraft guarantees a perfect fit and original quality. For critical sensors, many mechanics and owners prefer to stick with OEM to avoid compatibility issues. A review for a 2016 Explorer noted that a Duralast brand switch failed after only two months, reinforcing the preference for the OEM brand in some cases.
- Aftermarket Brands (Hella, Standard Ignition, True Tech): Aftermarket parts are a budget-friendly alternative. Brands like Standard Ignition (which produces the True Tech line) are well-known in the industry. While they offer good value, quality can sometimes be inconsistent compared to OEM. For a simple part like a pressure switch, a reputable aftermarket brand is often a perfectly acceptable choice for a DIY repair.
Pro Tip: Ford dashboards for many years have used the pressure switch to simply move the gauge to a "normal" position once pressure is above a low threshold, rather than showing real-time fluctuations. Don't be alarmed if your new switch causes the gauge to behave this way; it's often the intended design.
Cost of Replacing the Engine Oil Pressure Switch
| Part / Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $7 - $48 |
| New OEM (Motorcraft) Part | $18 - $45 |
| Shop Labor | $60 - $120 |
| Total Professional Replacement | $78 - $168 |
Frequently Asked Questions
🎬 See exactly where the sensor is located on EcoBoost engines.." loading="lazy" style="max-width:100%;height:auto;border-radius:6px;display:block;box-shadow:0 2px 8px rgba(0,0,0,0.1);" />Where is the oil pressure switch on a 2012-2021 Ford Explorer?
The switch is located on the engine block, typically near the oil filter housing and the alternator. On most Explorer engines from this generation, you can access it from underneath the vehicle.
Can I replace the oil pressure switch myself?
Yes, this is a very DIY-friendly job. It requires basic hand tools like a ratchet and a deep socket (usually 21mm or 13/16"). You'll need to safely raise the vehicle, disconnect the electrical plug, unscrew the old sensor, and screw in the new one. 🎬 Watch this step-by-step guide to replacing the switch yourself. Expect a small amount of oil to drip out.
What does the code P0520 mean on my Ford Explorer?
P0520 is a generic trouble code that means the Powertrain Control Module (PCM) has detected a problem with the engine oil pressure sensor/switch circuit. This could be a faulty sensor, a wiring issue, or an actual oil pressure problem. Related codes like P0521, P0522, and P0523 point to more specific issues like the sensor's performance, or readings that are too low or too high.
🎬 Watch this video to understand and fix P0520 error codes.Are there any recalls for this part?
No, there are no specific recalls for a faulty engine oil pressure switch on the 2012-2021 Ford Explorer. However, there have been recalls for other components that can cause a loss of oil pressure, such as oil pump belts on different models or oil line o-rings on a small number of 2023 Explorers. A Technical Service Bulletin (TSB 51764) was also issued for some 2020-2023 3.0L EcoBoost engines for internal oil leaks causing pressure warnings. This highlights the importance of properly diagnosing any oil pressure warning.
Helpful Videos
Technical Specifications
OEM Part Numbers: BE8Z-9278-A 6U5Z-9278-D GC3Z-9278-B SW-8368 CM5Z-9278-A
The part is a pressure-activated electrical switch that completes or breaks a circuit. It typically uses a single-pin connector and screws into the engine block. The required socket size for removal and installation is commonly 21mm or 13/16 inch.
We Have This Part in Stock
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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