how to fix P0700 code in Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather necessary tools and materials.
• Ensure the vehicle is on a flat surface and securely raised if needed.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fill plug and check the fluid level with a dipstick.
  2. If low, drain the old fluid using a fluid pump, and replace it with manufacturer-approved transmission fluid.
  3. Tighten the drain plug to the specified torque (e.g., 25 Nm).
  4. Refill the transmission with new fluid through the fill plug until it reaches the proper level.

3. Inspect and Repair Wiring

• Sub-steps:
  1. Locate the TCM and inspect the wiring harness for frays, corrosion, or loose connections.
  2. Use a multimeter to test the continuity of the wiring from the TCM to the connectors.
  3. Repair or replace any damaged wiring or connectors.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Disconnect the battery again.
  2. Remove mounting screws and disconnect the wiring harness from the TCM.
  3. Install the new TCM by reversing the removal steps.
  4. Reconnect the battery and allow the vehicle to relearn the transmission settings.