P08CD
Shift Solenoid J Performance/Stuck Off
Shift solenoid J is commanded on but does not engage the corresponding gear element.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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
Common causes
Ordered by how often each turns out to be the cause.
- Solenoid spool stuck closedCommon
- Hydraulic feed blockedPossible
- Carbon or debris buildup preventing free movementLess likely
Parts involved
- Shift Solenoid J
- Valve Body
P08CD is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.