what does it mean when my Honda Accord says "transmission fluid temperature too high"

Honda Accord 9th Generation (2013-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

536 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 the 'transmission fluid temperature too high' issue in Honda Accord. 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 components.
•Allow the engine and transmission to cool before performing repairs.

Symptoms

•Transmission warning light illuminated on the dashboard
•Slipping or erratic shifting during driving
•Unusual burning smell from the transmission area
•Decreased acceleration or power
•Overheating engine warning light may also be displayed

Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle's onboard diagnostics (OBD-II) for any related error codes.
3
Inspect the transmission cooler for leaks or blockages.
4
Verify the operation of the transmission fluid cooler fan.
5
Examine the wiring and connectors for the transmission temperature sensor for damage.

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

•Socket set
•Screwdrivers
•Transmission fluid
•Funnel
•OBD-II scanner

Parts Required

•Transmission fluid
•Transmission temperature sensor (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle's onboard diagnostics (OBD-II) for any related error codes.
3
Inspect the transmission cooler for leaks or blockages.
4
Verify the operation of the transmission fluid cooler fan.
5
Examine the wiring and connectors for the transmission temperature sensor for damage.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is cool.
Gather tools and materials needed for the repair.
Tools Required: Socket set, screwdrivers, transmission fluid, funnel, OBD-II scanner.

2. Check and Replace Transmission Fluid

Inspect Fluid Level:
- Remove the transmission dipstick, wipe clean, and reinsert it.
- Check the fluid level; it should be between the "Full" and "Add" marks.
Replace Fluid if Necessary:
- If the fluid is low, add the manufacturer-recommended transmission fluid.
- If the fluid is dark or smells burnt, consider a full fluid change.

3. Inspect and Clean Transmission Cooler

Locate the Transmission Cooler:
- Follow the transmission lines to find the cooler, typically located near the radiator.
Inspect for Blockages:
- Check for any debris or dirt obstructing airflow; clean as necessary.
Flush Cooler if Blocked:
- Disconnect the cooler lines and use a flushing kit to clean out the cooler.

4. Replace Transmission Temperature Sensor (if faulty)

Locate the Sensor:
- Identify the transmission temperature sensor, usually mounted on the side of the transmission.
Remove Old Sensor:
- Disconnect the wiring harness and unscrew the sensor.
Install New Sensor:
- Apply thread sealant to the new sensor and install it, replacing the wiring harness afterward.

5. Recheck Fluid Level and Test Drive

Final Fluid Check:
- After repairs, check and adjust the fluid level as necessary.
Test Drive:
- Take the vehicle for a test drive to ensure proper shifting and monitor the temperature gauge.