how to fix P0700 transmission control system code in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

500 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 system code in Toyota Corolla E170. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0700

Affected Component

Transmission

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Check engine light illuminated
•Transmission slipping or erratic shifting
•Rough or harsh shifting between gears
•Delayed engagement when shifting into drive or reverse
•Decreased fuel efficiency
•Transmission overheating

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 and check for additional transmission-related codes.
2
Inspect the transmission fluid level and condition; check for contamination or burnt smell.
3
Examine the wiring and connectors to the transmission control module for signs of damage or corrosion.
4
Test the transmission range sensor (neutral safety switch) for proper function and continuity.
5
Check for any TCM updates or recalls from the manufacturer that may address known issues.
6
Conduct a visual inspection of the transmission for any leaks or physical damage.

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
•Torque wrench
•Fluid pump for refilling transmission fluid
•Screwdrivers

Parts Required

•Transmission fluid (Toyota ATF WS)
•Transmission filter (if applicable)
•Transmission range sensor

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 transmission-related codes.
2
Inspect the transmission fluid level and condition; check for contamination or burnt smell.
3
Examine the wiring and connectors to the transmission control module for signs of damage or corrosion.
4
Test the transmission range sensor (neutral safety switch) for proper function and continuity.
5
Check for any TCM updates or recalls from the manufacturer that may address known issues.
6
Conduct a visual inspection of the transmission for any leaks or physical damage.

Solution

1. Preparation

Gather tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Ensure the vehicle is on a level surface and properly supported with jack stands.

2. Inspect and Replace Transmission Fluid

Remove the transmission fluid pan using a socket set.
Drain the old transmission fluid into a suitable container.
Inspect the fluid; if it appears burnt or contaminated, proceed with replacement.
Replace the transmission filter if applicable.
Refill the transmission with the recommended fluid type (Toyota ATF WS) through the dipstick tube until it reaches the proper level.

3. Replace Transmission Range Sensor

Locate the transmission range sensor on the transmission housing.
Disconnect the electrical connector from the sensor.
Remove the mounting bolts securing the range sensor.
Install the new sensor by reversing the removal steps and ensuring it is properly aligned.
Reconnect the electrical connector.

4. Reconnect Battery and Clear Codes

Reconnect the negative battery terminal.
Use the OBD-II scanner to clear the P0700 code and any related codes.
Start the vehicle and allow it to reach operating temperature.