Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has noticed that a part inside the transmission isn't gripping as it should. Imagine trying to hold onto a slippery bar of soap – that's kind of what's happening inside the car.
The transmission control module (TCM) has detected that the friction element labeled 'E' is slipping beyond acceptable limits.
The P079E code is triggered when the TCM detects that the friction element E, which is part of the transmission's clutch pack, is slipping. This could be due to insufficient hydraulic pressure, worn clutch plates, or other mechanical issues within the transmission.
• Transmission slipping
• Harsh or delayed shifting
• Check Engine Light illuminated
• Worn or damaged clutch plates
• Low transmission fluid level
• Faulty transmission solenoid
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
Friction Element: A component within the transmission that uses friction to transfer power.
• Check transmission fluid level and condition
• Inspect for transmission fluid leaks
• Perform a transmission pressure test
• Replace worn clutch plates
• Repair any fluid leaks and refill transmission fluid
• Replace faulty transmission solenoid
• OBD-II scanner
• Transmission fluid pressure gauge
• Basic hand tools
$300 - $1500
Difficult
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid changes
• Avoid aggressive driving
• Routine transmission inspections
Transmission Performance
• Avoid driving aggressively until repaired
• Have the transmission inspected by a professional
• Monitor for any changes in vehicle performance
Transmission repairs may be covered under powertrain warranty if the vehicle is within the warranty period.
This code has been more prevalent in vehicles with higher mileage and those that have not had regular transmission maintenance.
High – Continued driving can cause further damage to the transmission.
Driving with a slipping transmission can lead to unsafe driving conditions and further vehicle damage.
• Vehicle at operating temperature
• Transmission in drive mode
Inside the vehicle's transmission assembly.
Q: Can I drive with a P079E code?
A: It's not recommended to drive with this code active as it can lead to further damage.
Q: How is a slipping transmission diagnosed?
A: A mechanic will use diagnostic tools to check fluid levels, inspect for leaks, and test transmission pressure.
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