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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety while working on the electrical system.
• Allow the vehicle to cool down if it has been running.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid dipstick or fill plug.
  2. Remove the dipstick or plug and check fluid level; add fluid if low.
  3. If fluid is dirty or burnt, drain the old fluid from the transmission pan.
  4. Replace the filter if applicable.
  5. Refill with the manufacturer-recommended transmission fluid type.

3. Inspect and Repair Wiring

• Sub-steps:
  1. Inspect the wiring harness connected to the TCM for frayed wires or corrosion.
  2. Clean connectors with electrical contact cleaner.
  3. Repair any damaged wires using appropriate soldering techniques or connectors.
  4. Reconnect the wiring harness securely.

4. Replace the Transmission Range Sensor

• Sub-steps:
  1. Locate the transmission range sensor on the transmission.
  2. Disconnect the electrical connector from the sensor.
  3. Remove the mounting screws and take out the old sensor.
  4. Install the new sensor and secure it with screws.
  5. Reconnect the electrical connector.

5. Reprogram or Replace TCM (if necessary)

• Sub-steps:
  1. If the TCM is faulty, remove it by unscrewing the mounting bolts.
  2. Disconnect the wiring harness from the TCM.
  3. Install the new TCM, ensuring it is securely fastened.
  4. Reconnect the battery terminal.
  5. Use an OBD-II scanner to reprogram the new TCM if required.