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2018 Accord 2.0T Transmission Jerking/Hesitation

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Mike T. · rep 0 · May 25, 1:45 AM · 1 replies · solved · Question

Vehicle: 2018 Honda Accord Sport 2.0T

Hi everyone,

I'm experiencing some concerning issues with my 2018 Honda Accord 2.0T Sport, which has about 70,000 miles on it. Lately, I've noticed a distinct jerking or hesitation, particularly when shifting between lower gears (1st to 2nd, and 2nd to 3rd) at lower speeds. It's not a smooth transition, and sometimes it feels like it's 'hunting' for the right gear.

There's no check engine light on yet, and no specific codes showing up when I scan with my basic OBD-II reader. However, the driveability is definitely affected, and it's making me worried about the transmission.

Has anyone with a 2018-2022 Accord 2.0T experienced similar transmission behavior? What was the cause, and what was the solution? Could this be a software update issue, or something more serious with the 10-speed automatic? Any advice on what to check or ask about at the dealer would be helpful.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:45 AM

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ClearTheCode admin answer:

The transmission jerking or hesitation you're experiencing in your 2018 Honda Accord 2.0T is a common concern for owners of modern multi-speed automatic transmissions, even without a Check Engine Light (CEL).

Here are potential causes and diagnostic steps:

  1. Transmission Fluid Condition: Overdue or low transmission fluid can significantly impact shift quality. Contaminated or degraded fluid loses its lubricating and hydraulic properties.
  2. Software/ECU Updates: Manufacturers often release software updates to improve transmission shift logic, address known quirks, or optimize performance. Your vehicle might benefit from an update.
  3. Transmission Solenoids: Solenoids control the flow of transmission fluid, directing shifts. If a solenoid is sticking or failing, it can cause harsh or delayed shifts. While often triggering a CEL (P07xx codes), it's possible for early stages to present symptoms without a code.
  4. Clutch Pack Wear (Internal): Although less common at 70,000 miles for a well-maintained transmission, internal clutch pack wear can lead to slipping or harsh engagement.
  5. Torque Converter Issues: A failing torque converter can cause shuddering or inconsistent power transfer, sometimes mistaken for shift issues.

What to do:

  • Step 1: Check Transmission Fluid Level and Condition: Consult your owner's manual for the correct procedure to check the transmission fluid level. Note the color and smell of the fluid. Burnt smell or dark, gritty fluid is a red flag.
  • Step 2: Review Maintenance Records: Ensure the transmission fluid has been changed according to Honda's recommended schedule. If not, a fluid change with genuine Honda DW-1 fluid might be beneficial.
  • Step 3: Gentle Driving: Avoid aggressive acceleration or sudden stops, as this can exacerbate the issue and potentially cause further wear.

When to see a shop:

Given that there's no CEL, but significant driveability issues, it's highly recommended to take your Accord to a Honda dealership or a reputable transmission specialist as soon as possible. They have specialized diagnostic equipment to:

  • Check for pending or historical transmission-related trouble codes that might not illuminate the CEL.
  • Check for available software updates for the Transmission Control Module (TCM).
  • Perform a thorough inspection of the transmission, including fluid pressure tests and a road test with a diagnostic scanner to monitor live data during shifts. This will help determine if the issue is software-related, a failing solenoid, or a more serious internal transmission problem. Addressing this early can prevent more costly repairs down the line.
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