how to fix P0700 transmission code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery for safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Transmission Fluid

• Sub-steps:

  1. Locate the transmission dipstick (if equipped) and remove it.
  2. Using a fluid pump, extract old transmission fluid.
  3. Inspect the fluid for contaminants; if dirty, replace with new fluid.
  4. Refill with the manufacturer-recommended transmission fluid (check the owner’s manual for specifications).

• Tools Required:

  • Fluid pump
  • Funnel
  • Transmission fluid of appropriate specification

3. Check and Repair Wiring/Connectors

• Sub-steps:

  1. Locate the TCM and inspect its electrical connectors for damage or corrosion.
  2. Clean any corrosion found on connectors using electrical contact cleaner.
  3. If damaged, replace the wiring harness or connectors as necessary.

• Tools Required:

  • Electrical contact cleaner
  • Wire stripper/crimper (if repairs are needed)

4. Replace Transmission Control Module (if needed)

• Sub-steps:

  1. Disconnect the battery and remove the TCM from its mounting location.
  2. Unplug the wiring harness connected to the TCM.
  3. Install the new TCM by reversing the removal steps.
  4. Reconnect the battery and ensure all electrical connections are secure.

• Tools Required:

  • Socket set
  • Torque wrench (for TCM bolts, torque to manufacturer specifications)

5. Final Check

• Sub-steps:
  1. Reconnect the battery.
  2. Start the engine and check for any warning lights.
  3. Take the vehicle for a test drive to ensure proper shifting and operation.