how to diagnose P0700 transmission code on Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

• Remove the transmission fluid dipstick and check the fluid level and condition.
• If the fluid is low, top it off with the manufacturer-recommended fluid (Ford Mercon LV).
• If the fluid is burnt or contaminated, drain the transmission fluid using a drain pan.
• Replace the transmission fluid filter and refill the transmission with new fluid.

3. Check and Repair Wiring/Connectors

• Inspect the wiring harness leading to the TCM for frays or damage.
• Clean connectors with electrical contact cleaner.
• Repair or replace damaged wiring or connectors as needed.

4. Replace TCM (if necessary)

• If diagnostics indicate a faulty TCM, remove the existing module.
  • Remove any screws or bolts securing the TCM in place.
  • Disconnect the wiring harness.
• Install the new TCM.
  • Connect the wiring harness.
  • Secure the TCM with screws or bolts.
• Reconnect the battery.

5. Clear Codes and Test Drive

• Use the OBD-II scanner to clear the P0700 code.
• Perform a test drive to ensure proper shifting and operation of the transmission.
• Monitor for any reoccurrence of the P0700 code.