how to fix Honda Accord 10th Generation (2018-2022) transmission slipping when shifting

Honda Accord 9th Generation (2013-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

575 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix transmission slipping in Honda Accord 10th Generation (2018-2022). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine and transmission to cool down before performing any work.

Symptoms

•Transmission slips during acceleration
•Delayed engagement when shifting from park to drive
•Unusual engine revving without corresponding vehicle acceleration
•Check engine light may illuminate
•Fluid leakage under the vehicle
•Poor fuel economy

Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle's onboard computer for any stored error codes using an OBD-II scanner.
3
Inspect the transmission fluid for contamination (burnt smell or metal shavings).
4
Examine the transmission cooler lines and connections for leaks.
5
Test the transmission solenoids using a multimeter for proper resistance.
6
Inspect the transmission filter for clogs or contamination.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Transmission dipstick
•Funnel
•Honda ATF DW-1 fluid
•Socket set
•Torque wrench
•Drain pan
•Multimeter
•OBD-II scanner

Parts Required

•Honda ATF DW-1 fluid
•Transmission filter
•Gasket
•Transmission solenoids (if faulty)

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Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle's onboard computer for any stored error codes using an OBD-II scanner.
3
Inspect the transmission fluid for contamination (burnt smell or metal shavings).
4
Examine the transmission cooler lines and connections for leaks.
5
Test the transmission solenoids using a multimeter for proper resistance.
6
Inspect the transmission filter for clogs or contamination.

Solution

1. Fluid Check and Replacement

Sub-steps:
1. Park the vehicle on a level surface and engage the parking brake.
2. With the engine running, pull out the transmission dipstick, wipe it clean, and reinsert it.
3. Remove the dipstick again and check the fluid level, ensuring it is within the marked range.
4. If low, add Honda ATF DW-1 fluid until the correct level is reached.
5. If the fluid is dark or burnt, proceed to replace it.
Tools Required: Transmission dipstick, funnel, Honda ATF DW-1 fluid.

2. Transmission Fluid Change

Sub-steps:
1. Raise the vehicle using a jack and secure it with jack stands.
2. Place a drain pan under the transmission pan and remove the drain plug.
3. Allow the old fluid to completely drain and replace the drain plug.
4. Remove the transmission pan by unscrewing the bolts.
5. Replace the transmission filter and gasket.
6. Reinstall the transmission pan and tighten the bolts to the specified torque (typically around 8-10 ft-lbs).
7. Fill the transmission through the dipstick tube with new Honda ATF DW-1 fluid until the proper level is reached.
Tools Required: Socket set, torque wrench, drain pan, new transmission filter, gasket, Honda ATF DW-1 fluid.

3. Solenoid and Electrical Check

Sub-steps:
1. Disconnect the negative battery terminal to ensure safety.
2. Remove the transmission solenoids according to the service manual.
3. Test each solenoid with a multimeter for proper resistance (refer to specifications in the service manual).
4. Replace any faulty solenoids.
5. Reconnect all connectors and terminals, ensuring a secure fit before reconnecting the battery.
Tools Required: Multimeter, socket set.