how to diagnose a P0700 transmission code on Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the battery to prevent electrical shorts.

2. Fluid Check and Replacement

• Check Fluid Level: Remove the dipstick, wipe it clean, reinsert, and check the fluid level.
• Replace Fluid if Necessary:
  • Remove the drain plug and drain the old fluid.
  • Replace with manufacturer-recommended transmission fluid (Honda ATF DW-1).
  • Reinstall the drain plug and refill to the appropriate level.

3. Inspect and Repair Wiring and Connectors

• Inspect Wiring: Examine the wiring harness for frays or breaks. Repair any damaged wires.
• Clean Connectors: Remove connectors, clean with electrical contact cleaner, and reconnect.

4. Replace Faulty Sensors

• Identify Faulty Sensors: If any sensors tested faulty during diagnostics, remove them.
• Replace with New Sensors: Install new sensors, ensuring they are properly seated and connected.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminals securely.
• Use the OBD-II scanner to clear the P0700 code and any additional codes.