how to fix P0700 transmission error code on Skoda Octavia NFL (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.
• Raise the vehicle on jack stands for better access to the transmission.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission drain plug and place a drain pan underneath.
  2. Remove the drain plug and allow the fluid to drain completely.
  3. Inspect the fluid for metal shavings or burnt smell; if found, further inspection of the transmission is needed.
  4. Replace with manufacturer-approved transmission fluid (check owner’s manual for specifications).
  5. Reinstall the drain plug and torque to the specified value (usually around 30 Nm, check manual).

3. Inspect and Repair Wiring/Connectors

• Sub-steps:
  1. Examine the wiring harness that connects to the TCM for any signs of fraying or damage.
  2. Use a multimeter to check for continuity in the wiring.
  3. If damaged, repair or replace the wiring and connectors as necessary.
  4. Ensure all connectors are properly seated and locked in place.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Locate the TCM, usually found near the transmission or under the dashboard.
  2. Disconnect the battery again and remove any covers obstructing access to the TCM.
  3. Unplug the wiring harness from the TCM.
  4. Unscrew and remove the TCM from its mount.
  5. Install the new TCM and reconnect the wiring harness, ensuring secure connections.
  6. Reconnect the battery.