Shift Fork D Stuck

Check these first

• A shift fork D mechanically jammed in one position
• A failed shift fork D position sensor reporting no movement
• Dirty fluid or debris around the shift fork D
• Low or wrong transmission fluid letting the fork D bind
• A transmission control module that cannot free the shift fork D

What to do next

1. Check transmission fluid level, type, and condition
2. Read shift fork D position live data and command a shift
3. Inspect the shift fork D linkage for binding
4. Flush and refill the transmission with the correct fluid
5. Replace the shift fork D if it stays stuck
6. Clear the code and retest

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