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Engine-Codes – Generic – P079E

P079E Code - Transmission Friction Element 'E' Slip Detected

Quick Answer

The diagnostic trouble code P079E indicates that the transmission control module has detected a slip in the friction element 'E' within the transmission. Common causes include Low transmission fluid levels, Worn friction elements, Faulty transmission solenoids. 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
P079E indicates Transmission Friction Element 'E' Slip Detected.
Common causes
Common causes include Low transmission fluid levels, Worn friction elements, Faulty transmission solenoids.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P079E Description

The diagnostic trouble code P079E indicates that the transmission control module has detected a slip in the friction element 'E' within the transmission. This slip can occur when the transmission is not able to maintain a consistent connection between the input and output shafts, leading to erratic shifting and decreased performance.

OBDII Code P079E - Transmission Friction Element 'E' Slip Detected
P079E Code - Transmission Friction Element 'E' Slip Detected

Common Causes of P079E

  1. Low transmission fluid levels
  2. Worn friction elements
  3. Faulty transmission solenoids
  4. Electrical issues within the transmission control module

Symptoms of P079E

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Decreased fuel efficiency
  4. Loss of power

How to Fix P079E

  1. Check and top up transmission fluid levels
  2. Inspect and replace worn friction elements
  3. Test and replace faulty transmission solenoids
  4. Repair any electrical issues within the transmission control module
  5. Clear the diagnostic trouble code and test drive the vehicle to ensure proper functioning

Cost to Fix P079E

The cost of repairing a transmission friction element 'E' slip can vary depending on the exact cause of the issue and the extent of the damage. In general, the repair costs for this issue can range from $500 to $1500, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's recommended to get a few quotes from different shops to find the best price. Additionally, the specific diagnosis time and labor rates can also impact the overall repair costs.

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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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