my Tesla Model S Original (2012-2020) has an error code P0700, what does it mean

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

485 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0700 transmission control malfunction in Tesla Model S. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0700

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow engine and transmission to cool before servicing.

Symptoms

•Check engine light illuminated
•Transmission may exhibit erratic shifting or hesitation
•Potential loss of power during acceleration
•Decreased fuel efficiency
•Possible engagement issues with Drive or Reverse

Diagnostic Steps

1
Scan for additional error codes using an OBD-II scanner to identify specific transmission issues.
2
Inspect transmission fluid levels for proper levels and quality.
3
Check for any visible leaks around the transmission area.
4
Examine the wiring and connectors leading to the transmission control module for damage or corrosion.
5
Verify proper operation of the transmission control module (TCM) by using a multimeter to check voltage and ground signals.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Torque wrench
•Fluid pump

Parts Required

•Transmission fluid
•Transmission control module (if required)

Related Faults

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Diagnostic Steps

1
Scan for additional error codes using an OBD-II scanner to identify specific transmission issues.
2
Inspect transmission fluid levels for proper levels and quality.
3
Check for any visible leaks around the transmission area.
4
Examine the wiring and connectors leading to the transmission control module for damage or corrosion.
5
Verify proper operation of the transmission control module (TCM) by using a multimeter to check voltage and ground signals.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid.
Disconnect the battery to ensure safety while working on electrical components.
Allow the vehicle to cool down to prevent burns.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Lift the vehicle securely on jack stands.
2. Locate the transmission fluid dipstick or fill plug.
3. Remove the dipstick or fill plug and inspect the fluid condition (should be red and clear).
4. If the fluid is dark or has a burnt smell, drain the old fluid using a fluid pump.
5. Replace with manufacturer-recommended transmission fluid, filling to the correct level.
6. Reinstall the dipstick or fill plug, ensuring it is sealed properly.

3. Inspect and Repair Wiring

Sub-steps:
1. Locate the wiring harness connected to the TCM.
2. Visually inspect for frayed wires, corrosion, or loose connections.
3. Repair any damaged wires using electrical tape or heat shrink tubing.
4. Ensure all connectors are securely fastened.

4. Replace or Reprogram TCM (if necessary)

Sub-steps:
1. If diagnostics indicate a faulty TCM, unbolt it from its mount.
2. Disconnect the electrical connectors carefully.
3. Install the new TCM by reversing the removal steps.
4. Reconnect the battery and use the OBD-II scanner to reprogram the TCM if required.