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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, fluid catch pan, funnel
• Steps:
  1. Position the vehicle on a level surface.
  2. Remove the transmission fluid dipstick or fill plug.
  3. Use a fluid pump to extract old transmission fluid into a catch pan.
  4. Inspect the fluid for burning smell or debris.
  5. If necessary, refill with the correct type of Volkswagen transmission fluid (e.g., VW G052162 A2) until full, following the manufacturer’s specifications.

3. Inspect and Repair Wiring/Connectors

• Tools Required: Multimeter, wire brush, electrical cleaner
• Steps:
  1. Visually inspect the wiring harness to the TCM for fraying or damage.
  2. Use a multimeter to test for continuity in the wiring.
  3. Clean any corroded connectors using electrical cleaner and a wire brush.
  4. Replace any damaged wires or connectors as needed.

4. Replace Transmission Control Module (if necessary)

• Tools Required: Torque wrench, socket set
• Steps:
  1. Locate the transmission control module, usually found near the transmission.
  2. Disconnect the wiring harness from the TCM.
  3. Remove the mounting bolts securing the TCM (note torque specifications for reinstallation).
  4. Install the new TCM, secure it with bolts, and reconnect the wiring harness.
  5. Reconnect the negative battery terminal.