how to fix P0700 code in Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

• Step 1: Remove the transmission fluid fill plug using a socket set.
• Step 2: Check fluid level; if low, add the manufacturer-recommended transmission fluid (Honda ATF-Z1 or DW-1).
• Step 3: If fluid is burnt or contaminated, drain the transmission fluid by removing the drain plug.
• Step 4: Replace the drain plug and refill with new transmission fluid.

3. Inspect and Repair Wiring and Connectors

• Step 1: Visually inspect the transmission wiring harness and connectors for damage or corrosion.
• Step 2: Repair or replace any damaged wiring or connectors.
• Step 3: Ensure all connections are tight and free from moisture.

4. Reprogram or Replace the TCM

• Step 1: Using the OBD-II scanner, check if there are available updates for the TCM.
• Step 2: If updates are available, follow the manufacturer's procedure to reprogram the TCM.
• Step 3: If the TCM is faulty after testing, remove the old module and install a new TCM.
• Step 4: Clear the error codes using the OBD-II scanner.

5. Reconnect Battery

• Step 1: Reconnect the negative battery terminal.
• Step 2: Start the engine and let it idle for a few minutes.