P073DUnable to Engage Neutral
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P073D means neutral is commanded but not reached or not held. GM uses it on vehicles with electronic gear selection (shift-by-wire, e.g. Cadillac XT4): the selector or engine module compares commanded and actual range from the range sensor and flags it after 1.8–2 s in the selector module or 10 s in the engine module, after two trips. For Ford's 6F35 the supplier Sonnax describes a mechanical cause: a forward or direct clutch dragging in neutral, visible as turbine speed staying only 200–400 rpm below engine speed. The car may creep in N; range changes may be locked. The opposite, stuck in neutral, is P072A.
- What you may notice
- Vehicle creeps in N or engine is loaded when shifting to N
- N selection not accepted, warning message
- Harsh engagement N to D/R (6F35)
- Check engine light after two trips (GM)
- Likely causes
- LikelyFord 6F35: forward or direct clutch dragging (balance piston, plates, seal)
- PossibleShift-by-wire: range actuator or park module, range sensor or its calibration
- PossibleValve body (manual valve, missing check ball, sticking solenoid)
- RareCAN communication or control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.