how to fix P0700 code in Ram 1500 DT (2019-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Make sure the vehicle is parked on a level surface and secure it with wheel chocks.
• Disconnect the battery negative terminal to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and check fluid level.
  2. If fluid is low or burnt, drain the old transmission fluid using a pan.
  3. Replace the transmission fluid with the manufacturer-recommended fluid (e.g., ATF+4).
  4. Refill fluid through the dipstick tube to the proper level.

3. Check and Repair Wiring/Connectors

• Sub-steps:
  1. Visually inspect all wiring connected to the TCM for fraying or breaks.
  2. Use a multimeter to check for continuity in the wiring.
  3. Repair or replace any damaged wiring or corroded connectors.

4. Reset or Replace TCM

• Sub-steps:
  1. If no wiring issues are found, attempt to reset the TCM using an OBD-II scanner.
  2. If the reset does not clear the code or issues persist, remove the TCM from its mounting.
  3. Replace the TCM with a new, OEM-compatible unit.
  4. Reinstall the TCM and reconnect all wiring.

5. Reconnect Battery and Test Drive

• Sub-steps:
  1. Reconnect the battery negative terminal.
  2. Start the engine and check for any remaining warning lights.
  3. Take the vehicle for a test drive to ensure normal transmission operation.