P07A9

Transmission Friction Element D Stuck On

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Jerks when shifting gears
Switching delays
Transmission fluid overheating
Switching the box to emergency mode
Increased fuel consumption

Causes

Mechanical jamming of friction elements
Transmission fluid contamination or degradation
Control solenoid malfunction
Problems with the hydraulic circuit
TCM Software Errors

How to Fix

Check the level and condition of the transmission fluid
Diagnose the operation of control solenoids
Check the pressure in the hydraulic system
Perform gearbox adaptation
If necessary, disassemble and repair the gearbox

Related codes

P07AA P07AB P0796