how to fix the P0700 code on my Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Raise the vehicle securely on jack stands to access the transmission.

2. Inspect and Change Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid drain plug using the appropriate socket.
  2. Allow the old fluid to completely drain into a catch pan.
  3. Inspect the fluid for metal shavings or burnt smell, which indicates internal transmission issues.
  4. Replace the drain plug and torque it to the manufacturer’s specifications (usually around 30 ft-lbs).
  5. Refill the transmission with new OEM-approved transmission fluid through the dipstick tube, using a funnel. Consult the owner’s manual for the correct type and quantity of fluid (typically around 4-5 quarts).

3. Check and Repair Wiring/Connectors

• Sub-steps:
  1. Examine the wiring harness leading to the TCM for any signs of fraying, corrosion, or loose connections.
  2. Repair or replace any damaged wiring or connectors as necessary.
  3. Secure connections properly to avoid future issues.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Disconnect the electrical connectors from the TCM.
  2. Remove the mounting bolts securing the TCM using a socket set.
  3. Carefully remove the TCM and replace it with a new or refurbished unit.
  4. Reconnect all electrical connectors and ensure they are secure.
  5. Reconnect the negative battery terminal.