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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is on a level surface and set the parking brake.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick or filler plug.
  2. Remove the dipstick or filler plug and check fluid level; add fluid if low.
  3. Assess the fluid condition; if it’s dark or smells burnt, a fluid change is necessary.
• Tools Required: Funnel, transmission fluid (specify VW-approved type).

3. Inspect Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness connected to the transmission.
  2. Look for any frayed wires, corrosion, or loose connectors.
  3. Clean any corrosion from connectors and secure any loose connections.
• Tools Required: Wire brush, dielectric grease.

4. Replace Faulty Sensors

• Sub-steps:
  1. Identify and remove the faulty input or output speed sensors.
  2. Install new sensors, ensuring they are seated correctly.
  3. Reconnect the wiring harness securely.
• Parts Required: New input and/or output speed sensors (specific to Volkswagen Golf MK7).

5. Reset TCM and Clear Codes

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to clear the P0700 and any related codes.
  3. Perform a test drive to ensure that the check engine light does not re-illuminate.
• Tools Required: OBD-II scanner.