2017 Honda Odyssey Has Rough Idle

Causes of Rough Idling in Your 2017 Honda Odyssey and How to Resolve the Issue

Find Repair Location
Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
21% chance it's the
Spark Plugs
0%
15% chance it's the
Ignition Coil
0%
64% chance it's
Something else
The most common reasons a 2017 Honda Odyssey has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
  • Spark Plugs: Worn or fouled spark plugs can lead to misfires, poor fuel economy, and difficulty starting the engine.
  • Ignition Coil: A faulty ignition coil can cause misfires, rough idling, and difficulty starting the engine due to inadequate spark delivery to the spark plugs.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2017 Honda Odyssey has rough idle?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Here are a few common symptoms of worn-out brake pads:

  1. Low brake pad warning light is on: Not all vehicles are equipped with this system, but if yours is, this dashboard indicator light will likely be the first signal it’s time to replace your brake pads.
  2. Brakes start to squeal regularly: This is often one of the first signs of worn brake pads and is caused by a metallic piece built into brake pads for this exact purpose. This part contacts the brake rotor to make a squealing or whining noise when the pads are low.
  3. Brakes make loud grinding noise: If not addressed early enough, your brake pads may get so worn that the metal backing plate of the pad grinds against the metal rotor.
  4. Brake pads look thin: You may be able to visually check your brake pad thickness to determine if they need replacement.

Most often, a brake system inspection will just be a routine portion of manufacturer specified maintenance, and will be performed at mileage intervals. In those cases, there will likely be no symptoms. However, when a brake system makes a funny noise, causes vibration, is hard to use, will not slow the vehicle, prevents the vehicle from driving, makes the vehicle pull to one side, or leaks brake fluid, the vehicle will need a visit dedicated to the inspection of the brake system.

What are the steps to diagnose a rough idle in a 2017 Honda Odyssey?

When diagnosing a rough idle in a 2017 Honda Odyssey, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by using an OBD-II scanner to check for any error codes, as these can quickly point you to specific issues within the vehicle's computer system. Next, inspect the spark plugs, as worn or fouled plugs are common culprits of rough idling; replacing any damaged plugs can often resolve the problem. Following this, examine the air filter for dirt or clogs that may restrict airflow to the engine, and replace it if necessary. It's also crucial to inspect vacuum hoses for any cracks or disconnections, as leaks can significantly impact engine performance. Additionally, assess the fuel system, including the fuel filter and injectors, since clogs here can lead to similar symptoms. Cleaning the throttle body is another important step, as carbon buildup can disrupt the air-fuel mixture. Finally, consider performing a smoke test to identify any vacuum leaks in the intake system, which can further complicate the idle issue. By following this structured diagnostic approach, you can effectively identify and address the root causes of a rough idle in your Honda Odyssey.

What are the common causes of a rough idle in a 2017 Honda Odyssey?

When dealing with a rough idle in your 2017 Honda Odyssey, it's crucial to understand the common problems that could be at play. One of the primary culprits is a dirty or clogged air filter, which can significantly restrict airflow to the engine, leading to performance issues. Additionally, worn-out or faulty spark plugs may cause misfiring, contributing to an uneven idle. Another potential issue is vacuum leaks, which can disrupt the air-fuel mixture necessary for smooth engine operation. Fuel system problems, such as a clogged fuel filter or a malfunctioning fuel pump, can also impact engine performance and result in a rough idle. Furthermore, a faulty oxygen sensor can alter the air-fuel ratio, exacerbating the rough idle condition. Lastly, ignition system problems, including issues with the ignition coil or distributor, can lead to similar symptoms. By identifying and addressing these common causes, you can restore your Honda Odyssey's performance and ensure a smoother driving experience.

How urgent is it to address the rough idle in my 2017 Honda Odyssey?

Addressing a rough idle in your 2017 Honda Odyssey is not just a matter of comfort; it is crucial for the safety and longevity of your vehicle. A rough idle can indicate serious underlying problems such as spark plug failures, fuel system malfunctions, or engine misfires, which, if left unchecked, can lead to decreased fuel efficiency and even engine damage. Ignoring these symptoms may result in more costly repairs down the line, as well as potential safety hazards while driving. Regular maintenance and prompt attention to these issues can help you avoid significant complications and ensure that your vehicle operates smoothly. Therefore, if you notice a rough idle, it is essential to diagnose and address the problem as soon as possible, either through DIY methods or by consulting a professional mechanic, to maintain the overall health and performance of your Honda Odyssey.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2017 Honda Odyssey Rough Idle: Causes & Repairs | RepairPal