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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and set the parking brake.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

1. Remove the transmission dipstick and check the fluid level and condition.
   • Tools: Transmission dipstick.
   • If the fluid is low, top it up with the recommended fluid (Honda ATF-Z1 or DW-1).
   • If the fluid is degraded, proceed to change it.
2. Drain the old transmission fluid by removing the drain plug.
   • Tools: Socket set.
   • Ensure a pan is placed underneath to catch the fluid.
3. Replace the transmission fluid filter if applicable.
   • Tools: Wrench set.
   • Follow specific service manual procedures for filter replacement.
4. Refill the transmission with new fluid.
   • Tools: Funnel.
   • Use the recommended amount and type of transmission fluid.

3. Inspect and Repair Wiring/Connections

1. Check the wiring harness and connectors leading to the TCM for any signs of wear or damage.
   • Tools: Multimeter for continuity testing.
   • Repair or replace any damaged wiring or connectors.
2. Ensure all connectors are securely fastened.

4. Replace Transmission Control Module (if necessary)

1. If the TCM is faulty, remove the old module.
   • Tools: Socket set.
   • Follow vehicle-specific procedures for TCM removal.
2. Install the new TCM.
   • Tools: Socket set.
   • Securely connect all wiring harnesses.
3. Reconnect the battery.