how to fix P0705 code in Honda Civic 9th Generation (2012-2015)

Honda Civic 11th Generation (2022-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0705

3 min read

509 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 P0705 code related to the Transmission Range Sensor in Honda Civic 2012-2015. Step-by-step guide with tools and procedures.

Error Code

P0705

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shocks.
•Allow the engine and transmission to cool before performing any repairs to avoid burns.

Symptoms

•Check engine light illuminated
•Transmission not shifting properly
•Vehicle may not start
•Incorrect gear display on the dashboard
•Rough or harsh shifting during gear changes

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to confirm the P0705 code and check for any additional codes.
2
Inspect the Transmission Range Sensor (TRS) connector for any corrosion or loose connections.
3
Test the TRS voltage output using a multimeter while moving the gear selector through all positions.
4
Inspect the wiring harness for any damage or shorts between the TRS and the engine control unit (ECU).
5
Check the transmission fluid level and condition; low or contaminated fluid can affect sensor performance.
6
Verify the proper functioning of the gear shift mechanism and its linkage.

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
•Screwdriver set
•Wire brush
•Cleaning solvent

Parts Required

•Transmission Range Sensor (if replacement is needed)

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Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to confirm the P0705 code and check for any additional codes.
2
Inspect the Transmission Range Sensor (TRS) connector for any corrosion or loose connections.
3
Test the TRS voltage output using a multimeter while moving the gear selector through all positions.
4
Inspect the wiring harness for any damage or shorts between the TRS and the engine control unit (ECU).
5
Check the transmission fluid level and condition; low or contaminated fluid can affect sensor performance.
6
Verify the proper functioning of the gear shift mechanism and its linkage.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, screwdriver set, wire brush, cleaning solvent.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Clean the TRS Connector

Remove the TRS connector from the transmission.
Clean the connector pins using a wire brush and cleaning solvent to remove any corrosion.
Ensure the connector is free from dirt and debris before reconnecting.

3. Replace the Transmission Range Sensor (if necessary)

Tools Required: Socket set, torque wrench.
Locate the TRS on the transmission.
Remove the mounting bolts using a socket set.
Carefully lift out the old sensor from the transmission.
Install the new TRS in the reverse order, ensuring it is seated properly.
Torque the mounting bolts to the manufacturer's specifications.

4. Reconnect Electrical Connections

Reconnect the cleaned or new TRS connector.
Ensure all connections are secure and free from damage.

5. Reconnect Battery and Test

Reconnect the negative battery terminal.
Start the vehicle and check for any warning lights.
Test the transmission by shifting through all gears to verify proper operation.