my Tesla Outback has a P0700 code, what does that mean and how to fix it?

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, fluid catch pan, and a funnel.
• Disconnect the battery to prevent electrical shorts.
• Allow the vehicle to cool if the engine has been running.

2. Transmission Fluid Check

• Remove the transmission dipstick or access the fill plug.
• Check fluid level using the dipstick; add the recommended fluid type if low.
• If the fluid is dark or burnt, proceed to a fluid change.

3. Fluid Change

• Place a fluid catch pan under the transmission pan.
• Remove the transmission pan bolts using a socket set.
• Carefully lower the transmission pan and remove the old filter if applicable.
• Clean the pan and magnet; replace the filter with a new one if necessary.
• Reinstall the pan with a new gasket, torque the bolts to manufacturer specifications (usually around 10-15 ft-lbs, check service manual).
• Refill the transmission with the appropriate fluid type through the dipstick or fill port.

4. Transmission Control Module Check

• Reconnect the battery.
• Use a multimeter to test the TCM connections. Ensure it receives correct voltage and ground.
• If voltage is absent, trace the wiring back to the battery and fuses to find the fault.

5. Resetting the Codes

• After repairs, use the OBD-II scanner to clear the P0700 code.
• Perform a test drive to ensure the transmission operates smoothly without returning the error code.