how to fix P0700 transmission code on my Volvo XC60 First Generation (2008-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to avoid electrical shorts.
• Raise the vehicle on jack stands to access the transmission.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and remove it.
  2. Check the fluid level; if low, add the recommended transmission fluid (Volvo ATF).
  3. If the fluid is dark or burnt, drain the old fluid from the transmission pan.
  4. Remove the transmission pan (use a socket set) and clean the pan and magnet.
  5. Replace the transmission filter if equipped.
  6. Reinstall the pan with new gasket and torque to manufacturer specifications (usually around 10-12 Nm).
  7. Fill the transmission with the correct type and amount of fluid.

3. Inspect and Repair Wiring/Connectors

• Sub-steps:
  1. Visually inspect the wiring harness and connectors for any signs of wear, fraying, or corrosion.
  2. Clean any corroded connectors and ensure a tight fit.
  3. Replace any damaged wiring or connectors as necessary.

4. Test and Replace TCM (if necessary)

• Sub-steps:
  1. If previous steps do not resolve the issue, test the TCM for faults by following the manufacturer’s diagnostics procedure.
  2. If the TCM is faulty, remove it by disconnecting the wiring harness and unscrewing it from its mount.
  3. Install the new TCM and reconnect the wiring harness.
  4. Reconnect the battery.