how to resolve Honda CR-V Fifth Generation (2017-2022) P0700 transmission control system error?

Solution

1. Preparation

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

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid drain plug using a socket set.
  2. Allow the fluid to drain completely into a pan.
  3. Replace the transmission fluid filter if necessary.
  4. Reinstall the drain plug and torque to manufacturer specifications (typically around 33 lb-ft).
  5. Refill the transmission with the recommended fluid type (Honda ATF DW-1) through the dipstick tube.

3. Repair or Replace Wiring and Connectors

• Sub-steps:
  1. Carefully inspect the wiring harness and connectors for damage.
  2. Repair any frayed wires or replace damaged connectors as necessary.
  3. Ensure all connections are secure and free of corrosion.

4. Replace or Reprogram the TCM

• Sub-steps:
  1. Remove the TCM by unscrewing the mounting bolts and disconnecting the wiring harness.
  2. If replacement is necessary, install the new TCM and reconnect the wiring.
  3. If reprogramming is needed, connect the scanner and follow the manufacturer’s instructions to reprogram the TCM.