how to fix P0700 code on my Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather tools and ensure the vehicle is parked on a level surface.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check Transmission Fluid

• Remove the transmission dipstick (if applicable).
• Check fluid level; add transmission fluid if low, using the manufacturer-recommended type (e.g., Toyota ATF WS).
• Inspect fluid color and smell; if the fluid is dark or has a burnt odor, it may need to be replaced.

3. Inspect and Repair Wiring

• Examine the wiring harness and connectors leading to the TCM for frays or corrosion.
  • Tools Required: Wire brush, electrical contact cleaner, multimeter
• Clean or repair any damaged connections. Ensure all connectors are securely attached.

4. Replace the Transmission Control Module (if necessary)

• If diagnostics indicate a faulty TCM:
  1. Locate the TCM (usually found under the dashboard or near the transmission).
  2. Disconnect the wiring harness from the TCM.
  3. Remove the TCM mounting bolts and take out the module.
  4. Install the new TCM, securing it with bolts and reconnecting the wiring harness.
  5. Clear codes using an OBD-II scanner.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the vehicle and allow it to reach normal operating temperature.
• Test drive the vehicle to ensure normal operation and check for any new error codes.