What it means
Pressure control solenoid J stays in the activated state when commanded off. Affected hydraulic circuit stays pressurised.
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 regulates pressure in its hydraulic circuit, switching in response to TCM commands. This code sets when the circuit remains activated after the TCM commands solenoid J off, which can result from a stuck-open spool or an electrical driver that continues applying the command.
Common causes
Most likely first.
- Solenoid spool stuck in open position
- TCM output driver stuck on
- 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 compare the TCM’s solenoid J command with available pressure data to confirm the circuit stays active when commanded off.
- Check transmission fluid level and condition, then inspect for contamination that could keep solenoid J’s spool from moving freely.
- Inspect solenoid J’s connector and wiring for shorts, damage, or poor contact that might keep the solenoid energized.
- Check solenoid J coil resistance and circuit behavior against the manufacturer’s specification, following the vehicle’s electrical test procedure.
- If the wiring and coil pass, test the TCM output and inspect the solenoid spool and valve body for sticking in the open position.
Common fixes
- Repair wiring or connector faults that keep solenoid J energized.
- Replace solenoid J if its spool sticks in the open position or its electrical tests fail.
- Service contaminated transmission fluid as specified by the vehicle maker.
- Repair the TCM output driver or valve body if testing identifies either as the cause.
Can I keep driving?
Limit driving and avoid towing or hard acceleration; stop if the transmission slips, shifts unpredictably, or loses drive. A circuit that remains pressurized can cause harsh shifts and additional transmission wear.
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.