how to fix P0700 code in Honda Accord 9th Generation (2013-2017)

Honda Accord 11th Gen (2023-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

560 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 Accord 2013-2017. 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 battery before working on electrical systems.
•Allow the engine to cool before checking or changing transmission fluid.

Symptoms

•Check engine light illuminated
•Rough or erratic shifting
•Slipping transmission
•Delayed engagement when shifting
•Transmission overheating
•Poor acceleration

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to check for additional transmission-related trouble codes.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Examine the wiring harness and connectors related to the transmission control module (TCM) for damage or corrosion.
4
Check for any signs of fluid leaks around the transmission and TCM.
5
Perform a visual inspection of the TCM for any physical damage.
6
Test the TCM using a multimeter to check for proper voltage and ground connection.

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
•Fluid pump
•Torque wrench

Parts Required

•Honda ATF DW-1 transmission fluid
•TCM (if replacement is necessary)
•Electrical connectors (if needed)

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 using an OBD-II scanner to check for additional transmission-related trouble codes.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Examine the wiring harness and connectors related to the transmission control module (TCM) for damage or corrosion.
4
Check for any signs of fluid leaks around the transmission and TCM.
5
Perform a visual inspection of the TCM for any physical damage.
6
Test the TCM using a multimeter to check for proper voltage and ground connection.

Solution

1. Preparation

Gather necessary tools and materials.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Transmission Fluid

Sub-step 1: Locate the transmission dipstick and remove it to check fluid level.
Sub-step 2: If fluid is low or burnt, drain the transmission fluid using a fluid pump.
Sub-step 3: Replace with the manufacturer's recommended transmission fluid (usually Honda ATF DW-1).
Sub-step 4: Refill to the appropriate level and check for leaks.

3. Repair or Replace Wiring and Connectors

Sub-step 1: Visually inspect the wiring harness for frayed wires or corrosion.
Sub-step 2: Repair any damaged wires using appropriate soldering techniques or electrical connectors.
Sub-step 3: Replace any corroded connectors with new ones.

4. Test and Replace the TCM (if necessary)

Sub-step 1: Reconnect the battery and turn the ignition to the "ON" position without starting the engine.
Sub-step 2: Use a multimeter to check voltage at the TCM connector pins as per the service manual specifications.
Sub-step 3: If the TCM is faulty, remove it by disconnecting the wiring harness and unbolting it from its mounting location.
Sub-step 4: Install a new or refurbished TCM, reconnect the wiring, and make sure it is securely mounted.

5. Clear Codes and Test Drive

Sub-step 1: Use the OBD-II scanner to clear the P0700 code and any other stored codes.
Sub-step 2: Start the vehicle and perform a test drive to ensure proper shifting and operation.