What it means
The transmission control module monitors the control circuit for shift solenoid J. It sets this code when it detects an open circuit in that control path.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Shift solenoid J is operated through a control path that includes the wiring, connector, coil, and TCM output. The TCM sets this code when it detects an open circuit in that path, so it cannot reliably energize the solenoid to control the corresponding gear element.
Common causes
Most likely first.
- Open in control wire
- Open solenoid coil
- Pin pushed back out of connector body
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Read transmission codes and freeze-frame data, and note whether solenoid J is commanded when the fault appears.
- Inspect the solenoid J connector for a loose plug, a pushed-back pin, corrosion, or damage to the terminal lock.
- Trace the accessible control wire for breaks, pulled sections, or rubbing damage between the transmission connector and the TCM circuit.
- With power isolated as specified, check circuit continuity and solenoid J coil resistance against the manufacturer’s specification.
- If the wire and coil pass, verify the TCM connector terminals and output path using the vehicle’s wiring information.
Common fixes
- Seat the connector and secure any displaced terminal in the solenoid J circuit.
- Repair a broken or damaged control wire.
- Replace solenoid J if its coil is open.
- Repair a failed connector terminal or TCM output path if continuity testing locates the open there.
Can I keep driving?
Keep driving to a minimum and avoid towing because the transmission may lose the shift function controlled by solenoid J or enter limp mode. Stop if it slips, cannot select a usable gear, or shifts unpredictably.
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.