Honda Ridgeline Engine Oil Pressure Switch Guide (2006-2016)
Understanding the causes, symptoms, and replacement options for a faulty oil pressure switch in your first-generation Ridgeline.
- Always verify your engine oil level immediately if the oil light comes on.
- A faulty switch can cause the oil light to come on, leak oil, or trigger the Check Engine Light with codes like P0522.
- Replacement is simple and DIY-friendly, typically taking less than 30 minutes with the correct socket.
- For best results, use a Genuine Honda part or a premium aftermarket brand like Beck Arnley or Standard Ignition to ensure reliability.
Is Your Ridgeline's Oil Pressure Switch Failing?
A faulty engine oil pressure switch on the 2006-2016 Honda Ridgeline can cause confusing symptoms. The most common sign is the oil pressure warning light on your dashboard. This light might flicker, stay on constantly, or come on randomly even when the engine oil level is correct. In some cases, a bad switch can also leak oil. You might notice a small oil drip on the ground or see oil residue around the sensor itself. Because the Ridgeline's J35 V6 engine has switches that are tied to the VTEC and Variable Valve Timing (VVT) systems, a failure can sometimes trigger a Check Engine Light with codes like P0522, P3400, or P3497.
Don't Ignore the Oil Light
Never assume the oil light is just a faulty switch. Always check your engine oil level immediately. Driving with low oil pressure can cause catastrophic engine failure in a very short time. If the oil level is correct, the problem is likely the switch or its wiring, but it's a gamble you don't want to lose.
Choosing the Right Aftermarket Oil Pressure Switch
When it's time to replace the switch, you have several options. For many Honda sensors, owners prefer to stick with Genuine Honda parts to avoid issues. However, quality aftermarket brands can offer a reliable repair at a lower cost.
- Premium Aftermarket (e.g., Beck Arnley, Standard Ignition): These brands have a strong reputation for quality. Beck Arnley, in particular, is known for sourcing parts from OEM suppliers, meaning you might get a part identical to the original but in a different box. Standard Ignition (SMP) is another long-standing, trusted name in automotive electronics. These are a solid choice for a reliable, long-lasting repair.
- Standard Aftermarket (e.g., Facet): These brands provide a balance of quality and value. They are generally considered reliable for most daily driving applications and are a popular choice for DIY repairs.
- Economy Brands (e.g., URO Parts, Global Parts): Brands like URO Parts often offer the lowest price. However, forum discussions show mixed reviews on their electrical components, with some owners reporting premature failures. While they can be a budget-friendly option, they may not have the same longevity as premium brands. For a critical sensor like this, it's often worth spending a little more for peace of mind.
Pro Tip: Check for Leaks
The most common failure mode for these switches, besides electrical failure, is developing an oil leak through the body of the sensor. When you change your oil, take a moment to inspect the area around the oil pressure switch for any signs of wetness or grime build-up, which can indicate a slow leak.
Cost to Replace the Engine Oil Pressure Switch
Replacing the oil pressure switch is an affordable repair. The part itself is not expensive, and the labor is minimal for a professional mechanic.
| Item | Estimated Cost |
|---|---|
| New OEM (Genuine Honda) Part | $45 - $65 |
| New Aftermarket Part | $11 - $118 |
| Shop Labor | $60 - $125 |
| Total (DIY) | $11 - $118 |
| Total (Installed) | $71 - $243 |
Frequently Asked Questions (FAQ)
Where is the oil pressure switch located on a 2006-2016 Ridgeline?
The first-generation Ridgeline's 3.5L V6 engine has more than one oil pressure switch. The main switch for the warning light is typically located on the engine block, often near the oil filter. There are also switches related to the VTEC system located on the cylinder heads. It's important to identify which switch has failed, usually with the help of a diagnostic trouble code.
Can I replace the oil pressure switch myself?
Yes, this is a very DIY-friendly job for most home mechanics. It typically requires basic hand tools, including a special deep socket for oil pressure switches. The switch is simply unscrewed and the new one is threaded in. Always use a new O-ring or apply sealant to the threads as specified to prevent leaks.
Are there any recalls for the Ridgeline oil pressure switch?
There are no direct recalls for the engine oil pressure switch on the 2006-2016 Honda Ridgeline. However, Honda has issued Technical Service Bulletins (TSBs) and investigated issues related to oil pressure switches on similar V6 engines, particularly for codes P3400 and P3497 which are related to the rocker arm oil pressure switches. A 2017 Ridgeline investigation also noted DTC P2652.
What's the difference between an oil pressure switch and an oil pressure sender?
A switch is a simple on/off device. It closes a circuit to turn on the warning light when pressure drops below a set point. A sender (or sensor) is more complex and provides a variable reading, which is what an oil pressure gauge on the dashboard would use. The Ridgeline uses a switch for its main warning light.
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Technical Specifications
OEM Part Numbers: 37240-R70-A04 37240-R70-A03 37240-R70-A02 37240-R70-A01
The 3.5L V6 engine in the 2006-2016 Ridgeline uses multiple oil pressure switches. The main switch for the dashboard light is a simple on/off switch. Switches for the VTEC system are also used. The main switch (37240-R70-A04) is located on the rear cylinder head.
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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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