how to fix P0700 code in Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety.
• Raise the vehicle securely on jack stands if working underneath.

2. Check and Replace Transmission Fluid

• Fluid Level Check:

  • Locate the transmission dipstick (if applicable) and remove it.
  • Wipe it clean and reinsert to check the fluid level.
  • Add the recommended transmission fluid (Honda ATF-Z1 or equivalent) if low.

• Fluid Replacement (if fluid is contaminated):

  • Drain the old transmission fluid by removing the drain plug.
  • Replace the drain plug and torque it to manufacturer specifications (typically around 30 ft-lbs).
  • Refill with new Honda ATF-Z1 fluid through the dipstick tube until proper level is reached.

3. Inspect and Repair Wiring

• Visually inspect the wiring harness connected to the TCM and transmission.
• Repair or replace any damaged wires or connectors found during inspection.
• Ensure all connections are secure and free from corrosion.

4. Test Transmission Control Module (TCM)

• If issues persist, test the TCM using a multimeter to ensure it is receiving power and ground.
• Replace the TCM if it is found to be faulty (refer to manufacturer guidelines for programming new module).

5. Clear Codes and Road Test

• Use the OBD-II scanner to clear the P0700 code and any other related codes from the ECU.
• Reconnect the battery terminal and perform a road test to ensure the transmission operates correctly and the check engine light remains off.