1997-2003 Acura CL Engine Oil Pressure Switch: A Guide to Leaks and Warning Lights
Is your Acura CL's oil light on or are you spotting a leak near the oil filter? Your oil pressure switch is a common and simple-to-fix culprit.
- A leaking oil pressure switch is a very common failure on 1997-2003 Acura CLs and is a sure sign it needs replacement.
- A flickering oil light when the oil level is full is the other primary symptom of a bad switch.
- Replacement is an easy and inexpensive DIY job that can be done in under 30 minutes with basic tools.
- The genuine OEM part number is 37240-PT0-014, but quality aftermarket brands offer a reliable, cost-effective alternative.
Is Your Acura CL's Oil Pressure Switch Failing?
The oil pressure switch on the 1997-2003 Acura CL is a known failure point, but it's also inexpensive and easy to replace. For this specific vehicle, failures typically present in one of two ways: an external oil leak or a dashboard warning light that won't go away. Understanding these symptoms can save you from both worry and potential engine damage.
Oil Light On? Check Your Oil Level First!
If your red oil pressure light comes on, immediately and safely pull over. Turn off the engine and check the oil level using the dipstick. If the oil level is low, do not run the engine. If the oil level is full and the engine was running quietly with no knocking or ticking sounds, the problem is very likely a faulty switch. Driving with confirmed low oil pressure can destroy an engine in minutes.
Common Failure Symptoms
A bad oil pressure switch on your Acura CL will make itself known in a few distinct ways:
- Visible Oil Leak: This is a very common issue. The switch itself can start leaking oil from where the plastic connector meets the metal body. You may notice oil residue on the sensor, on the oil filter housing below it, or dripping down onto the subframe.
- Flickering or Solid Oil Light: The most obvious sign is the oil pressure light on your dash. It might flicker at idle or during turns, or it may stay on constantly, even when you know the oil level is correct.
- No Warning Light: In rare cases, the switch can fail to activate during a real low-pressure event. This is the most dangerous type of failure, which is why replacing a leaking or malfunctioning switch is so important.
Choosing the Right Aftermarket Part
For a simple part like this, an aftermarket switch is a perfectly acceptable and cost-effective choice. However, quality can vary between brands. The OEM part number for reference is 37240-PT0-014.
- Higher-Tier Brands (Recommended): Brands like Beck Arnley and Standard Ignition (SMP) have a strong reputation for quality. Beck Arnley often sources parts from the original equipment manufacturers, and Standard is a trusted name among professional technicians. These brands offer a good balance of OEM-like quality and aftermarket price.
- Budget-Tier Brands: Brands like URO Parts are typically more affordable. While they can be a good value, some owners have reported mixed results with the long-term reliability of budget electrical sensors. Given the critical function of this part and the small price difference, a higher-tier brand is a safer investment.
Pro Tip: Use Thread Sealant
The Acura CL oil pressure switch uses tapered pipe threads to seal, not an O-ring or gasket. When installing the new switch, apply a small amount of liquid thread sealant to the threads to ensure a leak-proof installation. Many new switches come with sealant already applied.
Cost to Replace Acura CL Oil Pressure Switch
Replacing the oil pressure switch is one of the more affordable repairs you can make. The part itself is not expensive, and labor is minimal.
| Part or Service | Estimated Cost |
|---|---|
| New Aftermarket Switch | $10 - $56 |
| New OEM Switch | $30 - $60 |
| Shop Labor | $50 - $100 |
| Total Estimated Cost (Shop Repair) | $60 - $156 |
Frequently Asked Questions
Where is the oil pressure switch located on the 1997-2003 Acura CL?
It is located on the engine block, right near the oil filter. On V6 models, it's typically on the oil filter housing assembly, next to the VTEC solenoid. You can usually see it by looking up from underneath the car or through the passenger-side wheel well.
Is replacing the oil pressure switch a DIY job?
Yes, for most home mechanics this is a very feasible DIY job. It requires basic tools, including a 24mm deep socket, and can typically be completed in under 30 minutes. Just be sure to have a drain pan ready to catch a small amount of spilled oil.
Why is my new oil pressure switch leaking?
If a new switch is leaking, it's likely due to one of two reasons. Either it was not tightened properly, or thread sealant was not used (or not enough was used). The switch should be snug, but do not overtighten and risk stripping the threads in the engine block. In rare cases, a defective part could be the cause.
Are there any recalls for the Acura CL oil pressure switch?
No. Searches of the NHTSA database and technical service bulletins (TSBs) show no specific recalls or service campaigns for the engine oil pressure switch on the 1997-2003 Acura CL.
Technical Specifications
OEM Part Numbers: 37240-PT0-014 37240-P2F-A01 37240-PD2-003 37240-PT0-004 37240-PT0-013 37240-PT0-023
The oil pressure switch for the Acura CL is a single-pin switch that uses a tapered thread to seal. It does not use a separate gasket or o-ring. A 24mm deep socket is typically required for removal and installation.
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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