Engine-CodesSubaru – P0700 Subaru

P0700 Subaru Code - Transmission Control System Malfunction

Quick Answer

The P0700 code for Subaru vehicles indicates a Transmission Control System Malfunction. Common causes include Faulty transmission sensors, Wiring issues, Malfunctioning transmission control module (TCM). 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
P0700 Subaru indicates Transmission Control System Malfunction.
Common causes
Common causes include Faulty transmission sensors, Wiring issues, Malfunctioning transmission control module (TCM).
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 Aug 18, 2024
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Code P0700 Subaru Description

The P0700 code for Subaru vehicles indicates a Transmission Control System Malfunction. This means that the engine control module (ECM) has detected a problem with the transmission control system. The transmission control system is responsible for managing the operation of the transmission, including shifting gears and controlling the torque converter.

OBDII Code P0700 Subaru - Transmission Control System Malfunction
P0700 Subaru Code - Transmission Control System Malfunction

Common Causes of P0700 Subaru

  1. Faulty transmission sensors
  2. Wiring issues
  3. Malfunctioning transmission control module (TCM)
  4. Transmission solenoid problems
  5. Fluid leaks in the transmission system

Symptoms of P0700 Subaru

  1. Rough or harsh shifting
  2. Delayed shifting
  3. Transmission slipping
  4. Transmission getting stuck in a specific gear
  5. Check Engine Light illuminated

How to Fix P0700 Subaru

  1. Diagnose the specific cause of the transmission control system malfunction using a diagnostic scanner.
  2. Inspect and test transmission sensors, wiring, TCM, and solenoids for faults.
  3. Repair or replace any faulty components identified during the diagnosis.
  4. Clear the diagnostic trouble codes from the ECM.
  5. Test drive the vehicle to ensure the issue has been resolved and the code does not reappear.

Cost to Fix P0700 Subaru

The typical repair costs for a P0700 code on a Subaru can range from $200 to $800, depending on the specific cause of the issue and the parts that need to be replaced. This estimate includes parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for more precise estimates.

Tech Notes for P0700 Subaru

The P0700 code is a generic Diagnostic Trouble Code (DTC) used in OBDII systems to indicate a problem with the transmission control system. It typically means that there are additional specific transmission-related trouble codes stored in the Transmission Control Module (TCM) that need to be retrieved to diagnose the issue further.

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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 P0700 Subaru Code

1. What does the OBDII code P0700 on my Subaru mean?

The P0700 code indicates a transmission control system malfunction in your Subaru.

2. What are some common symptoms of a P0700 code in a Subaru?

Common symptoms include issues shifting gears, hesitation or slipping during acceleration, and illuminated warning lights on the dashboard.

3. What are the possible causes of the P0700 code in a Subaru?

Potential causes can include faulty transmission control module (TCM), damaged wiring or connectors, low transmission fluid levels, or internal transmission problems.

4. How can I diagnose the cause of a P0700 code in my Subaru?

Diagnosis typically involves using a diagnostic scanner to retrieve any related trouble codes, conducting a visual inspection of wiring and connectors, and checking transmission fluid levels and condition.

5. Can I continue driving my Subaru with a P0700 code?

It is not recommended to continue driving with a P0700 code, as it can lead to further transmission damage and potentially unsafe driving conditions.

6. How can I repair a P0700 code in my Subaru?

Repair steps may include addressing any underlying issues causing the code, such as replacing a faulty TCM, repairing damaged wiring, performing a transmission fluid flush, or conducting necessary transmission repairs.

7. Are there any DIY tips for fixing a P0700 code in a Subaru?

While some basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, complex repairs involving the transmission system are best left to professional mechanics.

8. How much does it typically cost to repair a P0700 code in a Subaru?

The cost of repairs for a P0700 code can vary widely depending on the specific cause and needed repairs, ranging from a few hundred dollars for minor fixes to over a thousand dollars for major transmission repairs.

9. Can a P0700 code be related to other codes in a Subaru?

Yes, the P0700 code often accompanies specific transmission-related trouble codes that provide more detailed information about the nature of the malfunction.

10. How can I prevent a P0700 code from occurring in my Subaru?

Regular maintenance, such as checking and changing transmission fluid as recommended, can help prevent issues that may trigger a P0700 code in your Subaru.

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