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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to avoid electrical shorts.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.

2. Check Transmission Fluid

• Remove the transmission dipstick (if equipped) and wipe it clean.
• Insert it back and remove it again to check the fluid level.
• If fluid is low, add the correct ATF type specified in the owner’s manual.
• If the fluid is dark or has a burnt smell, consider a transmission fluid change.

3. Inspect Wiring and Connectors

• Visually inspect the wiring harness and connectors leading to the TCM.
• Look for frayed wires, loose connections, or corrosion.
• Clean any corrosion with electrical contact cleaner and ensure a snug fit of connectors.

4. Test the Transmission Control Module (TCM)

• Reconnect the battery and use an OBD-II scanner to clear the codes.
• Drive the vehicle to see if the P0700 code returns.
• If it does, you may need to replace the TCM. Follow the manufacturer’s procedure for replacement.

5. Replace or Repair Transmission Components

• If the issue persists, inspect and replace any faulty solenoids or internal components as diagnosed in earlier steps.
• Follow manufacturer specifications for torque settings and fluid replacement during reassembly.