how to fix P0700 code in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

4 min read

613 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 (2012-2020). 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 components.
•Allow the vehicle to cool before working on the transmission to avoid burns.

Symptoms

•Check engine light illuminated
•Erratic shifting or delayed gear engagement
•Loss of acceleration or power
•Unusual transmission noises
•Vehicle entering 'limp mode'
•Inconsistent or poor regenerative braking performance

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 is present.
2
Inspect the transmission fluid level and condition.
3
Check for any additional transmission-related codes that may provide more context.
4
Examine the wiring and connectors leading to the transmission control module for damage or corrosion.
5
Test the transmission control module for proper function using a diagnostic tool.
6
Verify the status of the 12V battery, as voltage issues can affect the transmission control system.

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
•Socket set
•Drain pan
•Funnel
•Multimeter
•Wire strippers/crimpers

Parts Required

•Transmission fluid (as specified by Tesla)
•Transmission control module (if replacement is necessary)
•Gaskets or seals for transmission drain and fill plugs

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 is present.
2
Inspect the transmission fluid level and condition.
3
Check for any additional transmission-related codes that may provide more context.
4
Examine the wiring and connectors leading to the transmission control module for damage or corrosion.
5
Test the transmission control module for proper function using a diagnostic tool.
6
Verify the status of the 12V battery, as voltage issues can affect the transmission control system.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative terminal of the 12V battery to ensure safety.

2. Inspect and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission fluid fill and drain plugs.
2. Place a drain pan underneath the transmission.
3. Remove the drain plug and allow the old fluid to fully drain out.
4. Inspect the old fluid for metal shavings or burning smell, indicating potential internal issues.
5. Replace the drain plug with a new gasket if necessary.
6. Refill the transmission with the recommended fluid type (check Tesla specs).
Tools Required: Socket set, drain pan, funnel.

3. Check and Repair Wiring/Connectors

Sub-steps:
1. Visually inspect the wiring harness and connectors for signs of wear or damage.
2. Use a multimeter to check for continuity and proper voltage at the transmission control module connector.
3. Repair or replace any damaged wiring or connectors as needed.
Tools Required: Multimeter, wire strippers/crimpers.

4. Reprogram or Replace Transmission Control Module

Sub-steps:
1. If diagnostics indicate a faulty transmission control module, remove it according to manufacturer guidelines.
2. Install the new or refurbished module.
3. Use a diagnostic tool to reprogram the new module to the vehicle.
Tools Required: OBD-II scanner, socket set.

5. Reconnect Battery and Test

Sub-steps:
1. Reconnect the negative terminal of the battery.
2. Start the vehicle and check for any remaining error codes.
3. Conduct a test drive to assess the transmission's performance.
Safety Warnings: Ensure all tools are removed from the engine bay before reconnecting the battery.