Engine-CodesSubaru – P0710 Subaru

P0710 Subaru Code - Transmission Fluid Temperature Sensor Circuit

Quick Answer

The P0710 code for Subaru vehicles indicates an issue with the Transmission Fluid Temperature Sensor Circuit. Common causes include Faulty transmission fluid temperature sensor, Wiring or connector issues in the sensor circuit, Low transmission fluid levels or degraded fluid. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0710 Subaru indicates Transmission Fluid Temperature Sensor Circuit.
Common causes
Common causes include Faulty transmission fluid temperature sensor, Wiring or connector issues in the sensor circuit, Low transmission fluid levels or degraded fluid.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0710 Subaru Description

The P0710 code for Subaru vehicles indicates an issue with the Transmission Fluid Temperature Sensor Circuit. This sensor is responsible for monitoring the temperature of the transmission fluid, which is crucial for the proper functioning of the transmission system. The sensor provides data to the vehicle's computer, allowing it to adjust various parameters such as shift points, torque converter lockup, and cooling fan operation based on the fluid temperature.

OBDII Code P0710 Subaru - Transmission Fluid Temperature Sensor Circuit
P0710 Subaru Code - Transmission Fluid Temperature Sensor Circuit

Common Causes of P0710 Subaru

  1. Faulty transmission fluid temperature sensor
  2. Wiring or connector issues in the sensor circuit
  3. Low transmission fluid levels or degraded fluid
  4. Electrical issues in the transmission control module
  5. Faulty engine coolant temperature sensor affecting transmission fluid temperature readings

Symptoms of P0710 Subaru

  1. Rough or delayed gear shifts
  2. Transmission slipping
  3. Transmission going into limp mode
  4. Decreased fuel economy
  5. Increased transmission temperatures

How to Fix P0710 Subaru

  1. Start by conducting a visual inspection of the transmission fluid temperature sensor and its wiring harness to check for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's resistance and voltage readings to determine if it is functioning correctly.
  3. Check the transmission fluid level and condition, topping off or replacing it if necessary.
  4. Inspect and repair any damaged wiring or connectors in the sensor circuit.
  5. If the sensor is found to be faulty, replace it with a new one and reset the trouble codes in the vehicle's computer.

Cost to Fix P0710 Subaru

The cost of repairing a P0710 code on a Subaru vehicle can vary depending on the specific model and the extent of the issue. In general, the price for a new transmission fluid temperature sensor ranges from $50 to $150, while labor costs can range from $100 to $200. Overall, the total repair cost for this issue may fall between $150 to $350. It's important to keep in mind that the actual cost can vary based on the location and the rates of the auto repair shop.

When is the Code Detected?

Transmission Control Module (TCM) detects excessively low or high voltage from the fluid temperature sensor.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0710 Subaru Code

1. What does the OBDII code P0710 mean on a Subaru?

P0710 indicates a problem with the transmission fluid temperature sensor circuit, which monitors the temperature of the transmission fluid.

2. What are common symptoms of the P0710 code on a Subaru?

Symptoms may include erratic shifting, transmission overheating, reduced fuel efficiency, or the transmission going into limp mode.

3. What causes the P0710 code on a Subaru?

Common causes include a faulty transmission fluid temperature sensor, damaged wiring or connectors, or issues with the vehicle’s powertrain control module (PCM).

4. Can I drive my Subaru with the P0710 code?

It’s not recommended to drive for long periods, as transmission performance may be compromised, potentially causing further damage.

5. How do I fix the P0710 code on a Subaru?

Repairs may include replacing the transmission fluid temperature sensor, repairing or replacing damaged wiring, or cleaning corroded electrical connectors.

6. How much does it cost to repair the P0710 code on a Subaru?

Costs vary depending on the repair, but replacing the sensor typically costs $100-$300, including parts and labor.

7. Can a low transmission fluid level cause the P0710 code?

While uncommon, low or degraded transmission fluid may affect sensor readings and lead to this code.

8. How is the P0710 code diagnosed on a Subaru?

A mechanic will inspect the sensor, wiring, and connectors, check the transmission fluid condition, and use a scan tool to monitor live data from the sensor.

9. Will resetting the code fix the P0710 issue on a Subaru?

Clearing the code may temporarily remove it, but the underlying problem must be addressed to prevent it from returning.

10. Is the P0710 code specific to Subaru vehicles?

No, P0710 is a generic OBDII code that applies to many vehicles, but the specific symptoms and repairs may vary by make and model.

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