how to fix P0700 transmission code in 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

4 min read

611 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 code in Subaru Outback (2010-2014). Step-by-step guide with symptoms, diagnostic steps, 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 vehicle to cool before checking the transmission fluid.

Symptoms

•Check engine light illuminated
•Transmission not shifting properly
•Slipping or harsh shifting
•Reduced fuel economy
•Transmission overheating
•Possible loss of reverse gear

Diagnostic Steps

1
Scan the vehicle's OBD-II system for additional trouble codes related to the transmission.
2
Inspect the transmission fluid level and condition (color and odor).
3
Check the wiring and connectors to the transmission control module for damage or corrosion.
4
Inspect the transmission fluid temperature sensor and related circuits.
5
Test the TCM for fault codes using a specialized scanner capable of reading transmission codes.
6
Assess the performance of the transmission solenoids by conducting an electrical resistance test.

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
•Multimeter
•Fluid catch pan
•Funnel

Parts Required

•Transmission fluid (specific type per manufacturer's recommendation)
•Transmission filter (if applicable)
•Transmission control module (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for additional trouble codes related to the transmission.
2
Inspect the transmission fluid level and condition (color and odor).
3
Check the wiring and connectors to the transmission control module for damage or corrosion.
4
Inspect the transmission fluid temperature sensor and related circuits.
5
Test the TCM for fault codes using a specialized scanner capable of reading transmission codes.
6
Assess the performance of the transmission solenoids by conducting an electrical resistance test.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, fluid catch pan, funnel, and replacement transmission fluid.
Safety Warnings: Disconnect the battery before working on electrical systems. Allow the vehicle to cool before checking the transmission fluid.

2. Address Fluid Issues

Check Fluid Level:
- Start the engine and let it idle until it reaches operating temperature.
- With the vehicle on a level surface, remove the transmission dipstick and wipe it clean.
- Reinsert the dipstick, remove it again, and check the fluid level. Add fluid if necessary, using the recommended type.
Change Transmission Fluid (if needed):
- Place a fluid catch pan under the transmission pan.
- Remove the transmission pan bolts using the socket set.
- Carefully lower the pan and drain fluid into the catch pan.
- Replace the transmission filter if applicable, and clean the pan before reinstalling it.
- Refill the transmission with the appropriate type of fluid.

3. Repair/Replace TCM or Wiring

Inspect and Repair Wiring:
- Visually inspect the wiring harness connected to the TCM and transmission for any signs of wear or damage.
- If damaged, repair or replace the wiring as necessary.
Replace TCM (if necessary):
- Disconnect the battery.
- Remove any necessary panels to access the TCM.
- Disconnect the electrical connectors from the TCM.
- Unscrew and remove the TCM from its mounting location.
- Install the new TCM by reversing the removal steps and ensure connectors are secure.

4. Clear Codes and Reset System

Use the OBD-II scanner to clear the P0700 code and any other related codes.
Perform a test drive to ensure the transmission functions correctly and the check engine light does not reappear.