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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Transmission Fluid

• Tools Required: Socket set, funnel, transmission fluid pump.
• Check the transmission fluid level using the dipstick; if low, add the appropriate VW-approved transmission fluid.
• If the fluid is dark or has a burnt smell, drain the old fluid and replace with new fluid.
  • Use a socket set to remove the transmission pan (if applicable).
  • Replace the transmission filter if necessary.
  • Refill with the correct VW transmission fluid, ensuring it reaches the proper level.

3. Inspect and Repair Electrical Connections

• Tools Required: Multimeter, electrical connector cleaner.
• Visually inspect all wiring harnesses and connectors related to the transmission control module.
• Use a multimeter to check for continuity and proper voltage at the connectors.
• Clean any corroded connectors and repair or replace damaged wiring as needed.

4. TCM Inspection and Replacement

• Tools Required: Socket set, torque wrench.
• Remove the transmission control module (TCM) by following the manufacturer's guidelines.
• Inspect the TCM for signs of damage; if faulty, replace it with a new one.
  • Ensure the new TCM is programmed to the vehicle using a compatible diagnostic tool.
• Reinstall the TCM and secure it with the specified torque settings.