how to fix P0700 code in Honda Accord 8th Generation (2008-2012)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid, funnel, safety glasses, gloves.
• Ensure the vehicle is on a level surface and the engine is off.
• Disconnect the battery to prevent any electrical shorts.

2. Check and Replace Transmission Fluid

• a. Locate the transmission dipstick and remove it. Check the fluid level; it should be within the marked range.
• b. If the fluid is low, add the appropriate type of transmission fluid (Honda Z-1 ATF or DW-1 ATF).
• c. If the fluid is dark or has a burnt smell, drain and replace the transmission fluid. Use a socket set to remove the drain plug, allow old fluid to drain, then replace the plug and fill with new fluid through the dipstick tube using a funnel.

3. Inspect and Repair Wiring and Connectors

• a. Visually inspect the wiring harness connected to the transmission control module and transmission for damage.
• b. Repair any damaged wires or connectors by soldering or replacing as necessary.
• c. Ensure all connections are secure and free from corrosion.

4. Test Transmission Control Module (TCM)

• a. Reconnect the battery and turn the ignition to the 'ON' position without starting the engine.
• b. Use a multimeter to check the voltage and ground signals at the TCM according to the service manual specifications.
• c. If the TCM is faulty, replace it with a new unit.

5. Replace Transmission Solenoids (if necessary)

• a. If solenoids are malfunctioning, remove the transmission pan using a socket set.
• b. Replace the solenoids one by one, ensuring to follow the manufacturer’s specifications for installation.
• c. Reinstall the transmission pan and torque the bolts to the specified value.