What Does P07A6 Mean?
Transmission friction element "C" is not engaging properly or is stuck in the released (off) position. This clutch pack or band within the automatic transmission fails to apply when commanded by the TCM, resulting in gear ratio errors. The vehicle may experience slipping, delayed shifts, or inability to engage certain gears. This typically indicates internal mechanical wear or hydraulic control issues within the transmission.
Safety Warning
Driving is not recommended. Loss of gear engagement can occur unexpectedly, causing sudden loss of power or unintended neutral conditions, especially during highway driving or merging. Have the vehicle towed to a repair facility.
Common Causes
35%
Worn or damaged friction element "C" clutch pack with glazed or burnt friction material
25%
Hydraulic circuit blockage or low pressure to friction element C servo/piston
20%
Faulty transmission control solenoid responsible for element C application
12%
Return spring failure or piston seal damage preventing proper clutch apply
8%
Low transmission fluid level or degraded fluid reducing hydraulic pressure
Diagnostic Steps
1
Check transmission fluid level and condition — burnt smell or dark discoloration indicates internal clutch damage.
2
Monitor transmission line pressure with a pressure gauge at the appropriate test port while commanding friction element C engagement.
3
Use scan tool to monitor shift solenoid duty cycles and compare commanded vs actual gear ratios for friction element C engagement patterns.
4
Perform a transmission fluid pan drop to inspect for excessive clutch material debris, metal shavings, or burnt friction material.
5
If solenoid and hydraulic pressures check out, internal transmission inspection or teardown is required to evaluate friction element C clutch pack condition.
Estimated Repair Cost
$1,800 - $4,500
Parts + labor, varies by vehicle and location
Transmission friction element "C" is not engaging properly or is stuck in the released (off) position. This clutch pack or band within the automatic transmission fails to apply when commanded by the TCM, resulting in gear ratio errors. The vehicle may experience slipping, delayed shifts, or inabilit...
The most common cause of P07A6 (Transmission Friction Element "C" Performance/Stuck Off) is: Worn or damaged friction element "C" clutch pack with glazed or burnt friction material
Typical repair costs for P07A6 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. Loss of gear engagement can occur unexpectedly, causing sudden loss of power or unintended neutral conditions, especially during highway driving or merging. Have the vehicle towed to a repair facility.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P07A6 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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