Ignition Knock Sensor for 2008-2012 Mitsubishi Outlander: A Complete Guide
Understand the symptoms of a bad knock sensor and learn how to choose the right replacement for your Outlander.
- A bad knock sensor will trigger a Check Engine Light (codes P0325, P0327) and cause poor acceleration and fuel economy.
- The sensor is located under the intake manifold, making replacement a labor-intensive job.
- Due to the high labor cost, choosing a reliable OEM or premium aftermarket brand is recommended to avoid repeat repairs.
- There are no safety recalls for this part, but ignoring the symptoms can lead to long-term engine damage.
Is Your Outlander's Knock Sensor Failing?
A bad knock sensor can cause problems that you might notice while driving. Because the sensor's job is to protect the engine, the vehicle's computer will often reduce engine power to prevent damage when it gets a bad signal or no signal at all. This can make your Outlander feel sluggish and slow to accelerate.
Key Symptoms of a Bad Knock Sensor:
- Check Engine Light: This is the most common sign. The computer will store a trouble code like P0325, P0327, or P0328. 🎬 See how to diagnose a low input P0327 code
- Reduced Engine Power: Your Outlander may feel weak, especially when accelerating or going uphill.
- Poor Fuel Economy: When the engine timing is not optimal, it burns more fuel than necessary.
- Engine Pinging or Knocking: You might hear a metallic pinging sound from the engine, especially under load. This happens because the computer isn't getting the right information to stop the detonation.
Choosing the Right Aftermarket Knock Sensor
When replacing the knock sensor on your 2008-2012 Outlander, you have a choice between OEM (Original Equipment Manufacturer) and various aftermarket brands. For many electronic sensors on Japanese vehicles, using an OEM or OEM-supplier part is often recommended by experienced mechanics. This is because some aftermarket sensors can be less reliable, fail prematurely, or not communicate correctly with the vehicle's computer. Given that replacing the sensor involves significant labor, choosing a quality part is important to avoid doing the job twice.
Pro Tip: The labor cost to replace the knock sensor is much higher than the cost of the part itself. Spending a little more on a high-quality, trusted brand can save you money and headaches in the long run.
Aftermarket Brand Tiers:
- Premium Aftermarket (e.g., Standard Ignition, Walker Products): These brands often aim to meet or exceed original specifications. Standard Motor Products (SMP) is a well-known manufacturer with a generally positive reputation, though quality can vary between their product lines. Walker Products also markets its sensors as being engineered to OE standards.
- Standard/Re-boxer Brands (e.g., Beck Arnley): Beck Arnley is known for sourcing parts from various manufacturers, sometimes including the original OEM supplier. However, the quality can be inconsistent, as you might receive a re-boxed OEM part or a lower-quality generic one.
- Economy Brands (e.g., Holstein, Global Parts): These brands offer a more budget-friendly option. Holstein states they use high-quality materials and aim to match OE fit and function. While they can be a good value, the risk of premature failure may be higher compared to premium brands.
How Much Does a Knock Sensor Replacement Cost?
The total cost depends on the price of the part and the cost of labor in your area. The knock sensor on the 2.4L Outlander is located under the intake manifold, which makes it more difficult to access and increases labor time.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $21 - $101 |
| New OEM Part | $220 - $270 |
| Shop Labor | $250 - $500 |
| Total Estimated Cost (Aftermarket) | $271 - $601 |
| Total Estimated Cost (OEM) | $470 - $770 |
Note: Costs are estimates and can vary based on your location and specific vehicle configuration.
Frequently Asked Questions
Where is the knock sensor located on a 2008-2012 Outlander?
For models with the 2.4L engine, the knock sensor is located on the front of the engine block, underneath the intake manifold. 🎬 Watch: How to access and replace the Outlander knock sensor This location requires removing other components to gain access.
What does a P0325 or P0327 code mean on my Mitsubishi Outlander?
Code P0325 indicates a general malfunction in the knock sensor circuit. Code P0327 specifically points to a low voltage signal from the sensor. Both codes mean the engine's computer is not receiving the correct signal, which could be due to a failed sensor, 🎬 Learn how to test and replace a faulty knock sensor damaged wiring, or a poor connection.
Can I replace the knock sensor myself?
While the sensor itself is only held by one bolt, its location under the intake manifold makes this a challenging job for a beginner. It requires removing several other engine components to access it. This repair is best suited for an experienced DIYer or a professional mechanic.
Are there any recalls for the knock sensor on this Outlander?
No, there are no recalls from the NHTSA for the ignition knock sensor on the 2008-2012 Mitsubishi Outlander. A Technical Service Bulletin (TSB-13-13-003) was issued for 2009-2010 models with the 3.0L V6 to update diagrams in the service manual, but it does not indicate a defect.
Helpful Videos
Technical Specifications
OEM Part Numbers: 1865A040
The knock sensor for the 2008-2012 Mitsubishi Outlander is a single-bolt mount piezoelectric sensor, typically with a 2-pin oval connector.
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.
- Mitsubishi Outlander: