Chrysler 300 Engine Oil Pressure Switch: A Guide for 2003-2019 Models
Is your oil light flickering or is your gauge acting strange? Here’s what you need to know about this common failure.
- A bad oil pressure switch is a very common failure, often triggering code P0520.
- Do not drive if the red oil light is on; you could have a real pressure issue that can destroy the engine.
- Replacement cost varies hugely by engine: it's easy on the 5.7L HEMI and older V6s, but very labor-intensive on the 3.6L V6.
- Due to a TSB for a revised part, using an OEM Mopar sensor is the most reliable choice for this repair.
Is Your Chrysler 300 Oil Pressure Switch Failing?
A bad oil pressure switch is a very common issue on the 2003-2019 Chrysler 300, especially on the 3.6L V6 engine. Because this sensor can cause serious warning lights to appear, many owners worry they have a major engine problem. Often, it's just this small, inexpensive part that has failed.
Symptoms of a Bad Oil Pressure Switch
Before you assume the worst, check if you are seeing these specific signs. A faulty switch often creates electrical issues, not mechanical ones.
- Flickering or Solid Red Oil Light: The most common symptom is the red oil warning light (it looks like an oil can) turning on and off, especially when the engine is idling or during acceleration.
- Check Engine Light: The switch failing will often trigger a check engine light. The most common trouble code is P0520, which points directly to a problem in the oil pressure sensor's circuit.
- Gauge Reading 0 or 99: If your 300 has a digital pressure gauge, it may read 0, or it might get stuck at its maximum reading, like 99 psi.
- Engine Stalling: In some instances, the car's computer may shut the engine down as a safety measure if it receives a signal for zero oil pressure.
Known Issue: TSB for 2013-2014 Models
Chrysler issued Technical Service Bulletin (TSB) #18-034-14 for 2013-2014 Chrysler 300 models equipped with the 3.6L, 5.7L, and 6.4L engines. This TSB specifically addresses the P0520 check engine light code. The official fix is to replace the original oil pressure sensor with a revised, updated part. This indicates that the manufacturer is aware of a potential defect in the original sensors.
Choosing the Right Aftermarket Part
When shopping for a replacement, you have a choice between the original equipment (OEM) Mopar part and various aftermarket brands. For this specific part, the choice matters.
- OEM (Mopar): Given the TSB and the critical nature of the part, Mopar is the safest choice. It is designed to meet Chrysler's exact specifications and is the updated part intended to fix the known issues. While it costs more, it provides the most peace of mind.
- Premium Aftermarket (e.g., Standard Ignition, Walker Products, Holstein): These brands aim to meet or exceed OEM quality. Some professional mechanics trust them. However, forum discussions show mixed results; some users report these parts failing quickly or providing inaccurate readings. If you choose a premium aftermarket part, ensure it comes with a good warranty.
- Economy Aftermarket: While the low price is tempting, budget-friendly brands are a gamble. An inaccurate or failed sensor can either cause unnecessary panic or, worse, fail to warn you of a real low-pressure problem. It is generally not recommended for this component.
Pro Tip: Location and Labor Costs
The cost to replace this switch depends entirely on which engine your Chrysler 300 has. The location of the sensor is very different between engines, which dramatically changes the labor time.
- 3.6L V6 (2011-2019): The sensor is in a difficult-to-reach spot under the lower intake manifold. A mechanic must remove the entire top part of the engine to get to it, a job that takes 3-5 hours. Because of the high labor cost, it is strongly recommended to replace the spark plugs and intake gaskets at the same time.
- 5.7L HEMI V8: The sensor is on the side of the engine block near the alternator. It's a tight fit, but much easier to access than on the 3.6L. Labor is typically 1-1.5 hours.
- 2.7L / 3.5L V6 (2003-2010): The sensor is located on the front of the engine and is relatively easy to access and replace. Labor is usually under 1 hour.
Cost to Replace an Engine Oil Pressure Switch
| Part/Service | Estimated Cost |
|---|---|
| New OEM (Mopar) Part | $50 - $95 |
| New Aftermarket Part | $13 - $75 |
| Shop Labor (V6/V8, pre-2011) | $100 - $200 |
| Shop Labor (3.6L V6, 2011+) | $400 - $700+ |
Frequently Asked Questions
Is it safe to drive with the oil light on?
No. You should not drive your car if the red oil pressure light is on. While the cause is likely a bad sensor, there is no way to know for sure without a proper diagnosis. If the light is on because of actual low oil pressure, you could destroy your engine in minutes. It is safest to have the vehicle towed to a shop.
Did Chrysler issue a recall for the oil pressure switch?
No, there has not been a formal safety recall for the engine oil pressure switch on the Chrysler 300. However, Chrysler did issue a Technical Service Bulletin (TSB) for 2013-2014 models, which is an official repair guide for dealers acknowledging a known problem.
Can I replace the oil pressure switch myself?
For owners of a 300 with a 2.7L, 3.5L, or 5.7L HEMI engine, this is a job a DIYer with the right tools can do. However, for the 3.6L V6 engine (2011 and newer), the job is very difficult and requires removing the intake manifolds. This is best left to an experienced mechanic unless you are a highly skilled DIYer.
What tools are needed to replace the switch?
The main special tool is a 1 1/16-inch (or 27mm) deep well socket designed for oil pressure sending units. The design of the socket is important, as some standard deep sockets will not fit over the plastic connector of the sensor correctly.
What is the difference between an oil pressure switch and a sending unit?
These terms are often used interchangeably. A simple "switch" only operates a warning light (on/off). A "sending unit" or "sensor" can measure a range of pressures and send that variable signal to a gauge. Your Chrysler 300 uses a sending unit that performs both functions.
Technical Specifications
OEM Part Numbers: 5149062AA 5149062AB 68060337AA
The required tool for removal and installation is typically a 1 1/16" or 27mm deep oil pressure switch socket.
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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.
- Chrysler 300:
- 🛍️ Shop This Part
- Is Your Chrysler 300 Oil Pressure Switch Failing?
- Symptoms of a Bad Oil Pressure Switch
- Known Issue: TSB for 2013-2014 Models
- Choosing the Right Aftermarket Part
- Pro Tip: Location and Labor Costs
- Cost to Replace an Engine Oil Pressure Switch
- Frequently Asked Questions
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