2011-2019 Honda Odyssey Power Inverter: Fixing Your Dead 115V Outlet
This guide covers the common failure symptoms, diagnosis, and replacement of the 115V AC power inverter in fourth and early fifth-generation Honda Odyssey minivans.
- The most common reason for a dead 115V outlet is a blown fuse, not a failed inverter. Always check the fuse in the rear cargo area fuse box first.
- This inverter is only for low-power devices (under 150 watts). Overloading it with items like air pumps can blow the fuse or damage the unit.
- Part number compatibility is critical. Different part numbers exist for 2011-2014, 2014-2017, and 2018-2019 models, and some are specific to trim levels like EX-L or Touring.
- A related recall (NHTSA 20V-066) exists for 2018-2020 models for a pinched power outlet wire harness, which can cause a short circuit.
Symptoms of a Failing Power Inverter
The signs of a bad power inverter in a Honda Odyssey are usually straightforward. Because its only job is to power the 115V AC outlet, any problems will be noticeable there.
- 115V Outlet is Completely Dead: This is the most common symptom. When you plug in a device, nothing happens, and the outlet's indicator light does not turn on.
- Intermittent Power: The outlet may work sometimes but cut out unexpectedly. This can be caused by an internal fault in the inverter or a loose connection.
- Outlet Shuts Down Under Load: The inverter may provide power to a very low-draw device like a phone charger but immediately shut off when a slightly more demanding device, like a laptop, is plugged in. This indicates a weak or failing internal component.
- Buzzing or Humming Noises: A noticeable electrical buzz from the inverter itself (located in the rear quarter panel) can be a sign of a failing transformer or other internal parts.
Diagnosing the Problem: Is It Really the Inverter?
Before you replace the inverter, it's critical to rule out simpler issues. In many cases, the problem is just a blown fuse.
- Check the Fuse First: The most common cause for a dead 115V outlet is a blown fuse. On the 2011-2017 Odyssey, the fuse for the AC inverter is located in the fuse box in the rear cargo area on the left (driver's) side. You will need to remove a small access panel to see the fuses. 🎬 Watch: How to find and replace the AC inverter fuse Check your owner's manual for the exact fuse number and amperage, but it is often a 15-amp fuse.
- Test With a Known Good Device: Make sure the device you're plugging in isn't the problem. Test the outlet with a simple, low-power device you know works, like a phone charger.
- Avoid Overloading: The Odyssey's power outlet is rated for about 150 watts. Trying to run a device that draws more power (like a vacuum, coffee maker, or power tool) will cause the inverter's protective circuit to trip or blow the fuse.
Pro Tip: If you replace a blown fuse and it immediately blows again when you plug something in, you likely have a short circuit in the wiring or a failed inverter that needs to be replaced.
Buying a Used 2011-2019 Odyssey Power Inverter
A used OEM inverter can be a cost-effective and reliable solution. However, careful verification is essential to ensure you get the right part that works correctly.
1. Verify Compatibility by Part Number
There are different part numbers for this generation range. It is crucial to match the part number from your original inverter or verify it with the vehicle's VIN. Known part numbers include:
- 38500-TK8-A01: Typically fits 2011-2014 Odyssey models.
- 38500-TK8-A11: Fits later models in the 2014-2017 range.
- 38500-THR-A01 / 38500-THR-A11: Fits 2018-2019 Odyssey models.
Warning: Some of these inverters were intended for Canadian-market vehicles or specific trim levels like the EX-L and Touring. Always confirm the part number and application before purchasing to avoid compatibility issues.
2. Physical Inspection
When inspecting a used inverter, look for:
- Clean Connectors: The electrical pins should be straight and free of any green or white corrosion.
- No Signs of Water Damage: The housing should be clean, without any water spots or mineral deposits. Its location in the quarter panel makes it potentially vulnerable to water intrusion if there are any body leaks.
- Intact Housing: Check for cracks or damage to the plastic casing and mounting tabs.
3. Why Used OEM is a Smart Choice
For an electronic module like a power inverter, a used OEM unit is often superior to a new, cheap aftermarket part. Genuine Honda parts are built to high-quality standards and ensure perfect electrical compatibility with your vehicle's system. Aftermarket electronics can be unreliable and may not have the same overload protection or clean power output as the original unit.
Cost Comparison
The cost of replacing a power inverter can vary significantly depending on the source of the part.
| Part Source | Estimated Cost |
|---|---|
| New OEM | $200 - $470 |
| New Aftermarket | $75 - $150 (Universal style, may require wiring modification) |
| Used OEM | $25 - $80 |
| Shop Labor | $100 - $200 |
Known Issues, Recalls, and TSBs
While there are no specific recalls for the power inverter module itself within the 2011-2019 model years, there is a related safety recall for some 2018-2020 Odyssey models.
NHTSA Recall 20V-066: This recall addresses the wiring harness for the third-row accessory power outlet. The harness could be pinched between the unibody and a trim panel, potentially causing an electrical short and increasing the risk of a fire. While this recall does not involve the inverter directly, it concerns the wiring in the same area of the vehicle. If you have a 2018 or 2019 model, it is wise to check if this recall has been performed.
Frequently Asked Questions (FAQ)
What can I safely plug into my Odyssey's 115V outlet?
You can safely plug in low-wattage devices, typically anything that draws 150 watts or less. This includes most laptop chargers, cell phone chargers, small LCD screens, and video game consoles. Avoid high-power items like hair dryers, coffee makers, power tools, or air compressors, as they will overload the inverter.
Where is the power inverter located on a 2011-2019 Honda Odyssey?
The power inverter is mounted behind the interior trim panel in the driver's side rear quarter panel, near the cargo area.
🎬 See this walkthrough on removing the rear quarter panelIs it difficult to replace the power inverter myself?
For a DIYer with basic tools, this is a manageable job. The main task involves carefully removing the rear interior trim panels to access the inverter. Once exposed, it is typically held in place by a few bolts and has one or two electrical connectors. The difficulty is rated at 2 out of 5.
My outlet stopped working after I tried to inflate an air mattress. What happened?
Most air mattress pumps draw more than 150 watts, which overloaded the inverter's circuit. The first thing to check is the dedicated fuse for the inverter, as it is designed to blow to protect the module from damage. If replacing the fuse doesn't solve the problem, the inverter itself may have been damaged.
Helpful Videos
Technical Specifications
OEM Part Numbers: 38500-TK8-A01 38500-TK8-A11 38500-THR-A01 38500-THR-A11
Converts 12V DC to 115V AC, typically with a maximum power output of 150 watts.
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.
- Honda Odyssey:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing Power Inverter
- Diagnosing the Problem: Is It Really the Inverter?
- Buying a Used 2011-2019 Odyssey Power Inverter
- 1. Verify Compatibility by Part Number
- 2. Physical Inspection
- 3. Why Used OEM is a Smart Choice
- Cost Comparison
- Known Issues, Recalls, and TSBs
- Frequently Asked Questions (FAQ)
- 🎟️ Get 5% Off