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

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid, and a clean container for fluid catch.
• Ensure the vehicle is parked on a level surface and the engine is off.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid dipstick and check fluid level.
  2. If fluid is low, add the recommended type of transmission fluid (Honda ATF-Z1 or equivalent).
  3. If fluid is dirty or burnt, drain the transmission fluid from the drain plug into a clean container.
  4. Replace the transmission filter (if applicable) and install a new filter.
  5. Refill the transmission with new fluid using a funnel; ensure the correct amount is added according to the manufacturer specifications.

3. Repair or Replace Wiring/Connectors

• Sub-steps:
  1. Inspect the wiring harness leading to the TCM for any frayed wires or loose connections.
  2. Repair any damaged wires with appropriate electrical tape or connectors.
  3. If the connector is corroded, clean it using electrical contact cleaner and ensure a tight fit when reconnected.

4. Test and Replace TCM (if necessary)

• Sub-steps:
  1. Using the multimeter, check the TCM for proper voltage and resistance according to the specifications.
  2. If the TCM fails the test, disconnect the battery, remove the TCM from its mounting location, and replace it with a new unit.
  3. Reconnect the battery and ensure all connections are secure.

5. Clear Codes and Test Drive

• Sub-steps:
  1. Use the OBD-II scanner to clear the P0700 code from the system.
  2. Start the engine and perform a test drive to ensure the transmission operates smoothly without further issues.