What it means
Pressure control solenoid J is commanded on but does not produce the expected pressure. Spool stuck closed or hydraulic feed restricted.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Pressure control solenoid J controls hydraulic pressure when the TCM commands it on. This code sets when the expected pressure response does not occur, pointing to a solenoid spool that is stuck closed or a restricted hydraulic feed to solenoid J.
Common causes
Most likely first.
- Solenoid spool stuck in closed position
- Hydraulic feed restricted by debris
- Carbon or debris buildup preventing free movement
Symptoms
- Check-engine or transmission warning light
- Harsh or delayed shifts
- Transmission may slip or hesitate
- Transmission may enter limp mode
How to diagnose it
- Save freeze-frame data and check whether the fault occurs when the TCM commands solenoid J on; review available commanded-pressure and actual-pressure data.
- Check transmission fluid level and condition according to the vehicle maker’s procedure, and look for contamination that could obstruct the feed.
- Inspect the solenoid J connector and harness for damage or poor contact that could prevent the commanded action.
- Test solenoid J’s electrical operation and coil resistance against the manufacturer’s specification before suspecting a hydraulic blockage.
- If electrical checks pass, inspect the solenoid spool and its hydraulic feed for sticking or debris using the transmission’s service procedure.
Common fixes
- Correct the fluid level or service contaminated fluid as specified for the vehicle.
- Repair poor connections or wiring affecting solenoid J’s command.
- Clean or replace solenoid J if its spool is sticking closed.
- Clear debris from the restricted hydraulic feed and repair the valve body if needed.
Can I keep driving?
Drive only as needed to reach a safe place or repair facility, and avoid towing, steep climbs, and hard acceleration. A restricted feed can cause slipping and heat that may damage transmission clutches; stop if drive becomes unreliable.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.