how do I fix the P0700 error code on my Tesla Outback 4th Generation (2010-2014)?

Subaru Outback 4th Generation (2010-2014)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

555 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 Outback (2010-2014). 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 the engine to cool before opening the transmission or checking fluid levels.

Symptoms

•Check engine light illuminated
•Erratic or harsh shifting
•Slipping transmission
•Loss of power during acceleration
•Transmission not engaging
•Decreased fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 and check for additional codes.
2
Inspect the transmission fluid level and condition; ensure it is at the correct level and not burned or contaminated.
3
Examine the wiring harness and connectors leading to the transmission control module for damage or corrosion.
4
Test the transmission control module (TCM) for proper function using a multimeter and appropriate service manual specifications.
5
Check for any software updates for the TCM that may resolve the issue.
6
Inspect the transmission solenoids for operation and possible failure.

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
•Transmission fluid
•Funnel
•Drain pan
•Wire strippers/crimpers

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Transmission control module (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 and check for additional codes.
2
Inspect the transmission fluid level and condition; ensure it is at the correct level and not burned or contaminated.
3
Examine the wiring harness and connectors leading to the transmission control module for damage or corrosion.
4
Test the transmission control module (TCM) for proper function using a multimeter and appropriate service manual specifications.
5
Check for any software updates for the TCM that may resolve the issue.
6
Inspect the transmission solenoids for operation and possible failure.

Solution

1. Preparation

Gather tools and components.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Fluid Check and Replacement

Sub-steps:
1. Remove the transmission dipstick and check fluid level.
2. If the fluid is low, top it up with the manufacturer-recommended transmission fluid.
3. If the fluid is dark or smells burnt, drain the transmission fluid using a drain pan.
4. Replace the filter if applicable, and refill with new transmission fluid.
Tools Required: Transmission fluid, funnel, drain pan, socket set.

3. Inspect and Repair Wiring

Sub-steps:
1. Visually inspect the wiring harness connected to the TCM for frays or breaks.
2. Use a multimeter to test continuity in the wires.
3. Repair or replace any damaged wires or connectors.
Tools Required: Multimeter, wire strippers/crimpers.

4. TCM Testing and Reprogramming

Sub-steps:
1. Remove the TCM from the vehicle.
2. Test the TCM with a multimeter against manufacturer specifications.
3. If faulty, replace the TCM.
4. Reinstall the TCM and use the OBD-II scanner to reprogram or update the software.
Tools Required: OBD-II scanner, multimeter, socket set.

5. Reassembly and Final Checks

Sub-steps:
1. Reconnect the negative battery terminal.
2. Start the engine and allow it to warm up.
3. Check for any leaks around the transmission and ensure smooth shifting.
Tools Required: None additional.