P0752 indicates that the transmission control module has detected that the shift solenoid for a particular gear is stuck in the on or off position. The solenoid is not responding correctly to control signals, causing abnormal shift behavior.
The solenoid coil or internal contacts have failed, causing it to remain energized or de‑energized.
Corroded, frayed, or shorted wires or a poor connector can prevent proper voltage to the solenoid.
Low, dirty, or incorrect fluid can cause the solenoid to stick mechanically or overheat.
Debris or a damaged valve body can physically jam the solenoid plunger.
A rare internal failure of the TCM can misinterpret the solenoid signal, but this is less common than hardware problems.
It is possible but uncommon. The PCM/ECM rarely fails in a way that produces this code; most cases are due to the solenoid, wiring, fluid, or mechanical issues.
Yes. Proper fluid level and condition are essential for solenoid operation and can sometimes resolve the code without part replacement.
Clearing the code may turn off the Check Engine Light temporarily, but if the underlying fault remains, the code will return and the transmission may continue to exhibit symptoms.
Replacing the entire transmission is rarely required for P0752. The issue is almost always resolved by repairing the specific solenoid, its wiring, or related fluid/mechanical problems.