how to fix P0700 code in Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

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

2. Address Transmission Fluid Issues

• Check Fluid Level:
  • Locate the transmission dipstick or fill plug.
  • Remove the dipstick and wipe it clean.
  • Reinsert and remove again to check the fluid level. Add fluid if low.
• Change Transmission Fluid:
  • Drain the old transmission fluid using a drain pan.
  • Replace with manufacturer-recommended transmission fluid (e.g., Honda ATF DW-1).
  • Refill the transmission through the dipstick tube or fill plug.

3. Repair or Replace Damaged Components

• Inspect and Repair Wiring:
  • Examine the wiring harness connected to the TCM.
  • Repair or replace any damaged wires or connectors.
• Replace TCM if Necessary:
  • Unplug the TCM from its connector.
  • Remove mounting bolts and take out the old TCM.
  • Install the new TCM and securely fasten it in place.
  • Reconnect the wiring harness.

4. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle.
• Shift through all gears and check for any abnormal behavior.