how to fix P0700 transmission code 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

531 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 code 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 the battery before working on electrical systems.
•Allow the engine to cool before opening any components related to the transmission.

Symptoms

•Check engine light illuminated
•Rough shifting or delay in gear engagement
•Transmission slipping or unexpected gear changes
•Unusual noises from the transmission area
•Decreased fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for related transmission codes.
2
Inspect transmission fluid levels and condition; look for discolored or burnt fluid.
3
Check for loose or damaged wiring and connectors related to the transmission control module (TCM).
4
Test the TCM using a multimeter to ensure it is receiving and sending the correct signals.
5
Perform a visual inspection of the transmission solenoids and valves for proper operation.
6
Road test the vehicle to replicate symptoms while monitoring the TCM and transmission performance.

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
•Wire stripper/crimper
•Transmission dipstick
•Funnel

Parts Required

•Transmission fluid (if needed)
•Transmission Control Module (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for related transmission codes.
2
Inspect transmission fluid levels and condition; look for discolored or burnt fluid.
3
Check for loose or damaged wiring and connectors related to the transmission control module (TCM).
4
Test the TCM using a multimeter to ensure it is receiving and sending the correct signals.
5
Perform a visual inspection of the transmission solenoids and valves for proper operation.
6
Road test the vehicle to replicate symptoms while monitoring the TCM and transmission performance.

Solution

1. Preparation

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

2. Check Transmission Fluid

Tools Required: Transmission dipstick, funnel, new transmission fluid (if necessary).
Remove the transmission dipstick and check the fluid level. If low, add the manufacturer-recommended transmission fluid.
Inspect fluid for discoloration or burnt smell; if found, plan for a fluid change.

3. Inspect and Repair Wiring

Tools Required: Multimeter, wire stripper/crimper.
Visually inspect the wiring harness connected to the TCM for any signs of wear, corrosion, or damage.
Use a multimeter to test continuity in the wiring. Repair or replace any damaged wiring.

4. Replace Transmission Control Module (if necessary)

Tools Required: Socket set, torque wrench.
Locate the TCM, which is typically found near the transmission or under the dashboard.
Remove the TCM by unscrewing the bolts and disconnecting the wiring harness.
Install the new TCM by reversing the removal process. Torque the bolts to manufacturer specifications.

5. Clear Codes

Tools Required: OBD-II scanner.
Reconnect the battery and use the OBD-II scanner to clear the P0700 code.
Verify that the code does not reappear after repair.