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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Multimeter
• Transmission fluid (Honda ATF DW-1)

2. Address Transmission Fluid Issues

• Check Fluid Level:
  1. Locate the transmission dipstick or fill plug.
  2. Remove the dipstick or fill plug and check fluid level. Add fluid if necessary.
• Change Transmission Fluid:
  1. Raise the vehicle securely on jack stands.
  2. Place a drain pan under the transmission pan.
  3. Remove the transmission pan bolts with a socket.
  4. Carefully lower the pan and allow the old fluid to drain completely.
  5. Replace the transmission filter if applicable.
  6. Clean the pan and replace the gasket, then reattach the pan with bolts torqued to manufacturer specifications.
  7. Refill the transmission with new Honda ATF DW-1 fluid through the dipstick or fill plug.

3. Inspect and Repair Electrical Components

• Check Wiring and Connectors:

  1. Inspect the wiring harness leading to the TCM for any fraying, corrosion, or loose connections.
  2. Repair or replace any damaged connectors or wiring as necessary.

• Test Transmission Range Sensor:

  1. Disconnect the sensor connector.
  2. Use a multimeter to test for continuity across the terminals.
  3. Replace the sensor if it fails the continuity test.

4. Clear Codes and Test Drive

1. Reconnect the battery after all repairs are completed.
2. Use the OBD-II scanner to clear the P0700 code and any other related codes.
3. Conduct a test drive to ensure the transmission operates smoothly and verify that the check engine light does not reappear.