how to fix P0700 code in Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle's battery to prevent electrical shorts.
• Ensure the vehicle is on a level surface and safely supported.

2. Transmission Fluid Check and Replacement

• Sub-steps:
  • Remove the transmission dipstick and check fluid level; add fluid if low.
  • If fluid is dirty or burnt, drain the old fluid by removing the drain plug.
  • Replace the transmission fluid with OEM-spec fluid (Honda ATF-Z1 or DW-1).
  • Reinstall the drain plug and torque to manufacturer's specifications (typically around 30 ft-lbs).

3. Inspect and Repair Wiring

• Sub-steps:
  • Visually inspect the wiring harness connected to the TCM.
  • Repair any frayed wires or replace connectors if damaged.
  • Use a multimeter to check for continuity in the wiring between the TCM and transmission sensors.

4. TCM Inspection and Reprogramming

• Sub-steps:
  • Locate the TCM (usually found under the dash or near the transmission).
  • Disconnect the TCM and inspect for physical damage.
  • If necessary, replace the TCM with a new or refurbished unit.
  • Reprogram the TCM using an appropriate diagnostic tool or take it to a dealership for programming.

5. Reconnect Battery and Test Drive

• Sub-steps:
  • Reconnect the vehicle's battery.
  • Start the engine and allow it to idle for a few minutes.
  • Take the vehicle for a test drive to ensure proper shifting and that the check engine light remains off.