how to resolve P0700 transmission code on Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Check Transmission Fluid

• Tools Required: Transmission dipstick (if applicable), funnel
• Remove the transmission dipstick and check the fluid level. If low, top off with the manufacturer-recommended transmission fluid.
• Inspect the fluid condition; if it is dark or smells burnt, a fluid change may be necessary.

3. Inspect Wiring and Connectors

• Tools Required: Multimeter, wire brush (for cleaning corrosion)
• Visually inspect the wiring harness and connectors leading to the TCM and transmission.
• Use the multimeter to check for continuity and shorts. Clean any corroded terminals with a wire brush.

4. Test Transmission Control Module (TCM)

• Tools Required: Multimeter, TCM removal tool (if applicable)
• Remove the TCM from its mounting location.
• Check the TCM power and ground circuits using the multimeter.
• If the TCM is faulty, replace it with a new one following manufacturer specifications.

5. Replace Transmission Fluid (if necessary)

• Tools Required: Socket set, transmission fluid pump
• Drain the old transmission fluid by removing the drain plug.
• Replace the transmission filter if applicable.
• Refill with new transmission fluid as specified in the owner's manual.
• Torque the drain plug to the manufacturer's specifications.