P0752 Shift Solenoid A Performance or Stuck On

Definition: The OBD-II code P0752 indicates that the Powertrain Control Module (PCM) has detected a malfunction with shift solenoid “A”. This can mean that the solenoid is stuck in the “on” position, causing improper shifting.

P0752 – Shift Solenoid A Performance or Stuck On

Severity: Moderate

Common Causes

P0752 – Shift Solenoid A Performance or Stuck On

Common causes:

• Faulty shift solenoid A valve
• Low transmission fluid level or dirty fluid
• Internal transmission mechanical issues
• Faulty wiring or connectors related to the shift solenoid A circuit
• ECU/TCM communication error

 

Common Misdiagnosis

OBD2 Code: P0752

Description: Shift Solenoid A Performance or Stuck On

Common Misdiagnosis:

• Replacing the shift solenoid without checking for electrical issues such as wiring problems or poor connections.
• Assuming the transmission fluid is at fault without verifying its level and condition.
• Mistaking a mechanical failure within the transmission for an electronic control issue.
• Overlooking potential PCM (Powertrain Control Module) software updates that may resolve the issue.

 

Common Diagnostic Steps

OBD2 Code: P0752

Description: Shift Solenoid A Performance or Stuck On

• Check the transmission fluid level and condition. Ensure it is at the correct level and not dirty or burnt.
• Inspect the wiring and connectors to the shift solenoid for any signs of damage, corrosion, or disconnection.
• Test the shift solenoid using a multimeter to ensure it has proper resistance according to manufacturer specifications.
• Perform a continuity test on the circuit related to shift solenoid A to check for any open or short circuits.
• Use a scan tool to monitor live data from the transmission control module (TCM) to verify if the solenoid is being commanded on/off properly.
• If applicable, perform an actuator test using a diagnostic tool to activate the solenoid manually and observe its operation.
• If all electrical tests pass, consider inspecting internal transmission components for mechanical issues that may cause sticking.
• If necessary, replace the shift solenoid A with a new one as per vehicle specifications.