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

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid, funnel, shop rags.
• Disconnect the battery to prevent electrical shorts and ensure safety while working on the vehicle.

2. Check and Replace Transmission Fluid

1. Locate the transmission dipstick (if applicable) or the fill plug on the transmission.
2. Remove the dipstick or fill plug and check the transmission fluid level.
3. If the fluid is low, add the appropriate transmission fluid as specified in the owner’s manual.
4. If the fluid is dirty or burnt, proceed to drain and replace it:
   • Place a drain pan under the transmission, remove the drain plug, and allow the old fluid to fully drain.
   • Replace the drain plug and torque to manufacturer specifications.
   • Refill the transmission with new fluid through the dipstick tube or fill plug using a funnel.

3. Inspect and Repair Wiring and Connectors

1. Visually inspect the wiring harness and connectors related to the TCM and transmission solenoids.
2. Repair any damaged wires or connections using electrical tape or heat shrink tubing.
3. Ensure all connectors are securely attached.

4. Reprogram or Replace Transmission Control Module (if necessary)

1. If the TCM is identified as faulty, remove it from the vehicle:
   • Disconnect any electrical connectors.
   • Remove mounting bolts and carefully take out the module.
2. Install the new or reprogrammed TCM:
   • Place the new module in position, secure it with bolts, and reconnect all connectors.
3. If reprogramming is required, follow the manufacturer’s procedure using an appropriate diagnostic device.

5. Clear Codes and Test Drive

1. Reconnect the battery and use an OBD-II scanner to clear all stored fault codes from the system.
2. Test drive the vehicle under various conditions to ensure that the transmission operates smoothly and the P0700 code does not reappear.