Engine-CodesGeneric – P07AC

P07AC Code - Transmission Friction Element 'F' Performance/Stuck Off

Quick Answer

The P07AC diagnostic trouble code (DTC) indicates an issue with the Transmission Friction Element 'F' Performance/Stuck Off. Common causes include Malfunctioning solenoid, Faulty transmission control module, Low transmission fluid levels. 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
P07AC indicates Transmission Friction Element 'F' Performance/Stuck Off.
Common causes
Common causes include Malfunctioning solenoid, Faulty transmission control module, Low transmission fluid levels.
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 14, 2024
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Code P07AC Description

The P07AC diagnostic trouble code (DTC) indicates an issue with the Transmission Friction Element 'F' Performance/Stuck Off. This code typically points to a problem with the transmission system, specifically related to the friction element 'F' not performing as expected or being stuck in the off position. The friction elements in a transmission are responsible for engaging and disengaging various components to facilitate gear changes and smooth operation of the vehicle.

OBDII Code P07AC - Transmission Friction Element 'F' Performance/Stuck Off
P07AC Code - Transmission Friction Element 'F' Performance/Stuck Off

Common Causes of P07AC

  1. Malfunctioning solenoid
  2. Faulty transmission control module
  3. Low transmission fluid levels
  4. Mechanical damage to the friction element
  5. Electrical issues in the transmission system

Symptoms of P07AC

  1. Slipping transmission
  2. Harsh shifting between gears
  3. Delayed engagement when shifting
  4. Loss of power
  5. Illumination of the Check Engine Light

How to Fix P07AC

  1. Perform a thorough diagnostic scan to confirm the P07AC code and identify the specific cause of the issue.
  2. Inspect the transmission fluid level and quality, topping up or replacing as necessary.
  3. Check the condition of the friction element 'F' and replace if damaged or stuck.
  4. Test the solenoid and transmission control module for proper function, replacing any faulty components.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P07AC

The cost of repairing a Transmission Friction Element 'F' Performance/Stuck Off issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the repair costs for this type of transmission issue can range from $200 to $800, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary widely, typically ranging from $80 to $150 per hour. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it's recommended to obtain quotes from local auto repair shops.

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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.

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