Jeep Wrangler 3.6L Engine Oil Pressure Switch Guide (2013-2022)
Understanding the common P0520 code and choosing the right replacement part for your JK or JL Wrangler.
- The oil pressure switch is located inside the oil filter housing, making replacement a difficult and labor-intensive job.
- Due to the high labor cost, it is strongly recommended to replace the entire oil filter housing assembly, not just the sensor.
- The P0520 trouble code is the most common indicator of a failed sensor circuit.
- While aftermarket options exist, using an OEM Mopar part or a high-quality aftermarket assembly is advised for long-term reliability.
A Common Failure Point on the 3.6L Pentastar
If you own a 2013-2022 Jeep Wrangler with the 3.6L V6 engine, you might eventually see the check engine light for code P0520. 🎬 Watch this guide on diagnosing and fixing the P0520 code. This code points to a problem with the engine oil pressure sensor circuit. While the sensor itself can fail, the issue is often more complex. On the 3.6L Pentastar engine, the oil pressure switch is located within the oil filter and cooler housing assembly. This entire assembly sits deep in the valley of the engine, underneath the intake manifolds.
Because of this location, replacing just the sensor is a very labor-intensive job. Many mechanics and experienced Jeep owners recommend replacing the entire oil filter housing assembly at the same time. The original factory housing is made of plastic and can crack or leak over time, causing both oil and coolant leaks. By replacing the whole unit, you address multiple potential failure points at once, saving you from having to do the same difficult repair again in the future.
Warning: Oil Leaks are a Serious Issue
An active oil leak from the oil filter housing is a common problem on these engines. If you notice oil pooling in the valley of your engine or dripping underneath your Jeep, it's critical to get it inspected. Driving with low oil pressure can lead to catastrophic engine failure.
Choosing the Right Aftermarket Part
When it's time for a replacement, you have several options. Making the right choice is important for long-term reliability.
- OEM (Mopar): This is the original part that came with your Jeep. For critical electronic sensors like this, Mopar is often considered the most reliable choice to avoid compatibility issues. However, it is also the most expensive option.
- Aftermarket (Brand Tiers): Several aftermarket companies make replacements. Their quality can vary.
- Top-Tier (e.g., Standard Motor Products, Walker Products): These brands have a long history of making reliable engine management parts and are often considered a good alternative to OEM. They engineer parts to meet or exceed original specifications.
- Jeep Specialist (e.g., Crown Automotive, Omix-Ada): These brands specialize in Jeep parts. Forum discussions show mixed reviews; some users have good experiences, while others report issues with fit or longevity. They can be a good value, but quality may not always match Mopar.
- Value-Oriented (e.g., Holstein, various store brands): These are typically the most affordable options but may have a higher risk of premature failure. For a part that requires so much labor to access, many owners advise against using the cheapest available option.
Pro Tip: Consider an Aluminum Housing
Several aftermarket companies now offer upgraded oil filter housing assemblies made from aluminum instead of plastic. These are designed to be more durable and resist the cracking and warping that affects the original plastic part. If you plan to keep your Wrangler for a long time, this can be a worthwhile investment.
🎬 See how to install the upgraded aluminum oil filter housing.Expected Replacement Costs
The cost can vary significantly depending on whether you replace just the sensor or the entire housing assembly.
| Part | Estimated Cost |
|---|---|
| Aftermarket Oil Pressure Switch Only | $40 - $90 |
| OEM Mopar Oil Pressure Switch Only | $55 - $100 |
| Aftermarket Oil Filter Housing Assembly (with sensors) | $150 - $250 |
| Shop Labor to Replace | $400 - $700 |
Note: Labor costs are high due to the need to remove the upper and lower intake manifolds to access the part. Prices are estimates and will vary by location and shop.
Frequently Asked Questions
Can I just replace the sensor and not the whole housing?
Yes, you can, but it's often not recommended. The labor to access the sensor is the most expensive part of the job. Since the plastic housing itself is a known failure point, replacing only the sensor creates a risk that you'll have to pay for the same labor again if the housing or the oil temperature sensor fails later.
Is there a recall for the oil pressure switch on the Jeep Wrangler?
There is no specific recall for the oil pressure switch itself. However, Chrysler issued a Technical Service Bulletin (TSB 18-034-14 REV. A) for the P0520 code on 2013-2014 Wranglers (and other models), which involved replacing the sensor with a revised part. There have been other recalls for oil leaks on Wranglers, but they typically involve other components like transmission or oil cooler lines.
What tools are needed for this replacement? 🎬 Watch a complete walkthrough of the sensor replacement process.
This is an advanced DIY job. It requires a comprehensive set of tools, including a socket set, torque wrench, ratcheting wrenches, and trim removal tools. You will need to disconnect the battery, drain coolant (optional, but recommended), and remove the airbox, throttle body, and both upper and lower intake manifolds. You must be careful not to drop debris into the open engine ports.
Will a bad oil pressure switch cause my Jeep to run poorly?
Usually, a faulty sensor circuit will just trigger the check engine light without affecting performance. However, the sensor also plays a role in the engine's dual-stage oil pump. A bad signal can sometimes cause the pump to stay in high-pressure mode, which can slightly reduce fuel efficiency. The real danger is not knowing your actual oil pressure, which could lead to severe engine damage if a real pressure problem occurs.
Helpful Videos
Technical Specifications
OEM Part Numbers: 68334877AA 5149062AB 5149064AB
Located in the engine valley as part of the oil filter/cooler housing assembly on the 3.6L Pentastar V6 engine.
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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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