OBD
P079E
Transmission Friction Element E Slip Detected
What it means
P079E means Transmission Friction Element E Slip Detected.
Check these first
- A worn or glazed clutch pack or band E
- Low or degraded transmission fluid
- A solenoid or valve fault on element E
- A blocked fluid circuit feeding element E
- A TCM calibration fault
What to do next
- Read friction element E slip data on a scan tool
- Check the fluid level and condition
- Test the solenoid and valve on element E
- Test line pressure and the apply circuit
- Rebuild the transmission if the element is worn
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.