P07AA
Transmission Friction Element E Performance/Stuck Off
Generic OBD-II
Common symptoms
What you'll notice
- Check the transmission fluid level and condition, and replace if necessary.
- Inspect and clean the transmission solenoids, and replace any faulty ones.
- Perform a transmission flush and filter replacement.
- Inspect and repair any damaged wiring or connectors in the transmission system.
- If all else fails, consider replacing the transmission friction element.
Common causes
Most likely first
- Low transmission fluid levels
- Worn or damaged friction elements in the transmission
- Faulty solenoid valves in the transmission
- Malfunctioning sensors or wiring issues
- Internal mechanical failure of the transmission
How to diagnose & fix
Work through it in order
- Slipping or delayed engagement of the transmission
- Harsh shifting or jerking during gear changes
- Decreased fuel efficiency
- Engine revving but vehicle not accelerating
- Illumination of the "Check Engine" or "Transmission" warning light
Read & clear P07AA yourself
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