how to fix P0708 code in Honda Civic 9th Generation (2012-2015)

Honda Civic 9th Generation (2012-2015)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0708

3 min read

563 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 P0708 code related to the Transmission Range Sensor in Honda Civic 2012-2015. Step-by-step guide with tools and procedures.

Error Code

P0708

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 short circuits.
•Allow the vehicle and transmission to cool before starting work to avoid burns.

Symptoms

•Check engine light illuminated
•Transmission stuck in one gear or failure to shift
•Erratic shifting behavior
•Vehicle may not start or crank
•Poor acceleration or loss of power

Diagnostic Steps

1
Scan the vehicle with an OBD-II scanner to confirm the P0708 code and check for additional trouble codes.
2
Inspect the Transmission Range Sensor wiring and connectors for any visible damage, corrosion, or loose connections.
3
Measure the resistance of the Transmission Range Sensor using a multimeter to ensure it falls within manufacturer specifications.
4
Check the TCM input signal using a scan tool to monitor the TRS output while moving the gear selector through various positions.
5
Verify that the battery voltage is within acceptable limits (typically 12.4 volts or higher) as low voltage can affect sensor operation.

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
•Torque wrench
•Wire brush
•Gasket scraper

Parts Required

•Transmission Range Sensor

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Diagnostic Steps

1
Scan the vehicle with an OBD-II scanner to confirm the P0708 code and check for additional trouble codes.
2
Inspect the Transmission Range Sensor wiring and connectors for any visible damage, corrosion, or loose connections.
3
Measure the resistance of the Transmission Range Sensor using a multimeter to ensure it falls within manufacturer specifications.
4
Check the TCM input signal using a scan tool to monitor the TRS output while moving the gear selector through various positions.
5
Verify that the battery voltage is within acceptable limits (typically 12.4 volts or higher) as low voltage can affect sensor operation.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery cable to ensure safety.
Raise the vehicle using a jack and secure it on jack stands if access is required from underneath.

2. Inspect and Repair Wiring

Tools Required: Wire brush, multimeter, electrical connectors.
Inspect the wiring harness connected to the Transmission Range Sensor for any signs of fraying, corrosion, or damage.
Clean any corroded connectors with a wire brush or contact cleaner.
Repair or replace any damaged wires or connectors as necessary.

3. Replace the Transmission Range Sensor

Tools Required: Socket set, torque wrench, gasket scraper, new sensor.
Locate the Transmission Range Sensor, typically mounted on the side of the transmission.
Disconnect the electrical connector from the sensor.
Remove the mounting bolts securing the sensor to the transmission using the socket set.
Carefully remove the sensor from its position, using a gasket scraper if necessary to remove old gasket material.
Install the new sensor by positioning it correctly and securing it with bolts to the manufacturer's torque specifications (usually around 8-10 ft-lbs).
Reconnect the electrical connector to the new sensor.

4. Reconnect Battery and Test

Reconnect the negative battery cable.
Start the vehicle and allow it to idle for a few minutes.
Drive the vehicle to ensure smooth shifting and check if the check engine light remains off.