What Does P07AA Mean?
Transmission friction element "E" is not engaging properly or is stuck in the released position. The TCM has detected that this clutch pack or band fails to apply when commanded, preventing the transmission from achieving the correct gear ratio. This element is typically involved in higher gear ranges or overdrive engagement. The driver may experience slipping during specific gear transitions, RPM flare, or the transmission defaulting to a limited gear range.
Safety Warning
Driving is not recommended. A slipping friction element can fail completely without warning, causing loss of drive power. The transmission may also overheat from slipping, potentially leading to fire risk. Arrange for towing.
Common Causes
35%
Worn friction element E clutch pack with degraded friction material unable to hold torque
25%
Insufficient hydraulic pressure at element E servo due to valve body wear or passage restriction
20%
Failed solenoid controlling element E apply pressure
12%
Damaged servo piston seals causing internal pressure leak at element E apply circuit
8%
Low transmission fluid level reducing overall system pressure capacity
Diagnostic Steps
1
Verify transmission fluid level and quality — low fluid or burnt fluid can directly affect clutch engagement pressure.
2
Use scan tool to monitor gear ratio calculations during shifts that require element E application, noting any slip or flare conditions.
3
Perform hydraulic pressure testing at the element E apply circuit port and compare to manufacturer specifications under various load conditions.
4
Test the element E control solenoid for proper resistance, current draw, and actuation response using scan tool output tests.
5
Inspect the transmission pan for excessive friction material or metallic debris that would indicate internal clutch wear.
Estimated Repair Cost
$1,800 - $4,500
Parts + labor, varies by vehicle and location
Transmission friction element "E" is not engaging properly or is stuck in the released position. The TCM has detected that this clutch pack or band fails to apply when commanded, preventing the transmission from achieving the correct gear ratio. This element is typically involved in higher gear rang...
The most common cause of P07AA (Transmission Friction Element "E" Performance/Stuck Off) is: Worn friction element E clutch pack with degraded friction material unable to hold torque
Typical repair costs for P07AA range from $1,800 to $4,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Driving is not recommended. A slipping friction element can fail completely without warning, causing loss of drive power. The transmission may also overheat from slipping, potentially leading to fire risk. Arrange for towing.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P07AA to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
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