how to fix P0701 code in Volkswagen Golf Seventh Generation (2013-2020)

Learn how to diagnose and fix P0701 transmission control system range performance issue in Volkswagen Golf (2013-2020). Step-by-step guide included.

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical short circuits.

2. Transmission Fluid Service

• Tools Required: Socket set, transmission fluid pump, catch basin.
• Sub-steps:
  1. Remove the transmission fluid pan by loosening the bolts with a socket wrench.
  2. Allow the old fluid to drain completely into the catch basin.
  3. Inspect the pan for metal shavings or debris, indicating possible internal issues.
  4. Replace the filter if applicable.
  5. Reinstall the pan using new gasket material and torque bolts to manufacturer's specifications (typically 10-12 Nm).

3. Range Sensor Replacement

• Tools Required: Socket set, screwdrivers, torque wrench.
• Sub-steps:
  1. Locate the range sensor on the transmission.
  2. Disconnect the electrical connector from the sensor.
  3. Remove the mounting bolts and carefully take out the old sensor.
  4. Install the new sensor, ensuring it is aligned correctly.
  5. Reconnect the electrical connector and torque bolts to specifications.

4. TCM Check and Replacement

• Tools Required: Multimeter, socket set, TCM replacement if necessary.
• Sub-steps:
  1. Test the TCM with a multimeter for voltage and resistance, following the manufacturer's diagnosis procedures.
  2. If the TCM is faulty, remove it by disconnecting the harness and unbolting it from its mount.
  3. Install the new TCM by securing it in place and reconnecting the harness.
  4. Clear the P0701 code using the OBD-II scanner.

5. Reconnect Battery and Final Checks

• Sub-steps:
  1. Reconnect the battery terminals.
  2. Start the vehicle and allow it to reach normal operating temperature.
  3. Shift through all gears to ensure smooth operation.