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 flat surface and the engine is off.
• Disconnect the battery's negative terminal for safety.

2. Check and Replace Transmission Fluid

• Step 1: Locate the transmission dipstick and check fluid level. If low, add the correct type of transmission fluid as specified by Honda (typically CVT fluid for 10th Generation Civics).
• Step 2: If fluid is discolored or contaminated, drain the transmission fluid using a fluid pump or drain pan, and replace it with new fluid.
• Tools Required: Fluid pump, drain pan.

3. Inspect and Repair Wiring/Connectors

• Step 1: Remove the cover under the dashboard to access the TCM wiring harness.
• Step 2: Visually inspect the wiring for frays, breaks, or corrosion. Repair or replace any damaged wiring or connectors.
• Tools Required: Wire stripper/crimper, electrical tape.

4. Replace the Transmission Control Module (if necessary)

• Step 1: Unplug the TCM's electrical connectors.
• Step 2: Remove the bolts securing the TCM to its mounting bracket and carefully take it out.
• Step 3: Install the new TCM by securing it in place with bolts and reconnecting the electrical connectors.
• Tools Required: Socket set.

5. Reconnect Battery and Clear Codes

• Step 1: Reconnect the negative terminal of the battery.
• Step 2: Use the OBD-II scanner to clear the P0700 code and any other related codes.
• Tools Required: OBD-II scanner.