Shift Solenoid A Stuck On
P0752 indicates that the transmission shift solenoid A is stuck in the ON position, preventing proper gear selection and hydraulic pressure control. This code sets when the PCM detects that solenoid A cannot turn off as commanded, disrupting normal transmission operation.
What You Might Notice
- Transmission slipping between gears
- Transmission overheating
- Transmission catching or hesitating in gear
- Decreased fuel economy
- Vehicle entering limp mode
- Check Engine Light illuminated
Most Common Causes
- 1
Faulty Shift Solenoid A
The solenoid valve itself is stuck in the open position or has failed electromagnetically, preventing it from closing when de-energized. This is the most common cause of this code.
- 2
Dirty or Contaminated Transmission Fluid
Degraded or contaminated fluid can cause solenoid spools to stick, restricting their movement and preventing proper valve closure.
- 3
Restricted or Clogged Transmission Filter
A plugged transmission filter reduces hydraulic flow and can cause pressure buildup that prevents solenoid operation, particularly affecting shift solenoid functionality.
- 4
Corroded Connectors or Damaged Wiring
Corrosion, loose connections, or damaged wiring to the solenoid can cause intermittent or constant electrical issues that prevent proper solenoid control.
How to Diagnose It
- 1
Check Faulty Shift Solenoid A — The solenoid valve itself is stuck in the open position or has failed electromagnetically, preventing it from closing when de-energized. This is the most common cause of this code.
- 2
Check Dirty or Contaminated Transmission Fluid — Degraded or contaminated fluid can cause solenoid spools to stick, restricting their movement and preventing proper valve closure.
- 3
Check Restricted or Clogged Transmission Filter — A plugged transmission filter reduces hydraulic flow and can cause pressure buildup that prevents solenoid operation, particularly affecting shift solenoid functionality.
- 4
Check Corroded Connectors or Damaged Wiring — Corrosion, loose connections, or damaged wiring to the solenoid can cause intermittent or constant electrical issues that prevent proper solenoid control.
How to Fix It
- 1
Replace Shift Solenoid A
Remove and replace the faulty shift solenoid A with a new OEM or quality aftermarket unit. Verify correct part fitment for your vehicle's transmission model before installation.
- 2
Flush and Replace Transmission Fluid and Filter
Perform a complete transmission fluid flush and replace the transmission filter to remove any contamination causing solenoid sticking. This should be done even if replacing the solenoid.
- 3
Inspect and Repair Solenoid Connectors and Wiring
Examine the shift solenoid A electrical connector and wiring harness for corrosion, loose connections, or damage. Clean corroded connections or replace damaged wiring as needed.
- 4
Check Transmission Valve Body and Hydraulic Passages
If solenoid replacement does not resolve the code, inspect the transmission valve body for mechanical sticking or blockages in hydraulic passages that may require professional transmission service or rebuild.
Need a deeper diagnosis?
Search for related repair guides or browse by system.