OBD
P073D
Unable to Engage Neutral
What it means
P073D means Unable to Engage Neutral.
Check these first
- Low or dirty transmission fluid
- A failed shift solenoid for neutral
- A faulty transmission range sensor
- A TCM command fault
- A sticking valve body
What to do next
- Check the fluid level and condition
- Read the transmission range sensor on a scan tool
- Command neutral on a scan tool
- Test the shift solenoids
- Replace the range sensor or solenoid if the command fails
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.