how to fix P0700 code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• 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

• Tools Required: Socket set, transmission fluid pump, fluid catch pan.
• Remove the transmission pan using a socket set.
• Allow the old fluid to drain completely into a catch pan.
• Inspect the transmission filter; replace if clogged or damaged.
• Reinstall the transmission pan with a new gasket, torquing bolts to manufacturer specifications.
• Fill the transmission with the correct type and amount of fluid (consult the owner’s manual for specifications).

3. Check and Repair Wiring/Connectors

• Tools Required: Multimeter, wire brush, dielectric grease.
• Visually inspect wiring to the TCM for frays or corrosion.
• Use a multimeter to test continuity and resistance in the wiring.
• Clean any corroded connectors with a wire brush and apply dielectric grease to protect against moisture.

4. Replace Transmission Control Module (if necessary)

• Tools Required: Socket set, OBD-II scanner.
• Locate the TCM, usually found near the transmission or under the dashboard.
• Disconnect the wiring harness from the TCM.
• Remove the TCM from its mounting bracket using a socket set.
• Install the new TCM, reconnecting the wiring harness securely.
• Clear the trouble codes using an OBD-II scanner.