my Honda Pilot YF3 (2016-2022) has a check engine light with code P0700

Honda Pilot Third Generation (2016-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

594 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 P0700 transmission control system malfunction in Honda Pilot YF3 (2016-2022). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0700

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shocks or shorts.
•Allow the vehicle to cool before checking the transmission fluid to avoid burns.

Symptoms

•Check engine light illuminated
•Transmission shifting issues (e.g., hard shifts, slipping)
•Unresponsive transmission in certain gears
•Decreased fuel efficiency
•Potential overheating of the transmission
•Transmission warning light may also be illuminated on the dashboard

Diagnostic Steps

1
Scan the vehicle with an OBD-II scanner to retrieve additional transmission-related codes.
2
Inspect the transmission fluid level and condition (check for contamination or burning smell).
3
Visually inspect the wiring and connectors associated with the transmission control module (TCM).
4
Check for any blown fuses related to the transmission system.
5
Test the TCM functionality with a multimeter to ensure it is receiving the correct voltage and signals.
6
Conduct a road test to observe the transmission behavior under various driving conditions.

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

•OBD-II scanner
•Multimeter
•Socket set
•Torque wrench
•Fluid pump

Parts Required

•Honda ATF DW-1 (if fluid change is necessary)
•Transmission control module (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle with an OBD-II scanner to retrieve additional transmission-related codes.
2
Inspect the transmission fluid level and condition (check for contamination or burning smell).
3
Visually inspect the wiring and connectors associated with the transmission control module (TCM).
4
Check for any blown fuses related to the transmission system.
5
Test the TCM functionality with a multimeter to ensure it is receiving the correct voltage and signals.
6
Conduct a road test to observe the transmission behavior under various driving conditions.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent electrical shorts.
Ensure the vehicle is on a level surface and securely lifted if needed.

2. Check Transmission Fluid

Remove the transmission dipstick (if applicable).
Wipe it clean, reinsert it, then remove it again to check fluid level.
If low, top off with the recommended Honda ATF fluid (e.g., Honda ATF DW-1).
Inspect fluid for discoloration; if burnt, a fluid change is necessary.

3. Inspect Wiring and Connectors

Locate the TCM and visually inspect all wiring and connectors for signs of wear, corrosion, or disconnection.
If any damage is found, repair or replace damaged wiring and connectors.

4. Replace Blown Fuses

Locate the fuse box and check for any blown fuses related to the transmission control system.
Replace any blown fuses with new ones of the same amperage.

5. TCM Testing and Replacement

Using a multimeter, check the voltage at the TCM harness connector while the ignition is on (engine off).
If voltage is absent or incorrect, trace wiring for faults. If TCM is confirmed faulty, replace it.
To replace, remove the TCM mounting bolts, disconnect the harness, and install the new TCM in reverse order.

6. Reset Codes

After completing repairs, reconnect the battery.
Use the OBD-II scanner to clear the P0700 code and any other related codes.
Turn the ignition on and ensure the check engine light is off.