What does code P0721 mean?
The output speed sensor signal is outside the expected operating range.
OBD-II Code
P0721 — Output Speed Sensor Circuit Range/Performance
The output speed sensor signal is outside the expected operating range.
Common symptoms
- Transmission cannot accurately determine vehicle speed
- harsh shifts
Possible causes
- Worn sensor
- slow or inaccurate signal
Initial recommendation
Replace output speed sensor if readings do not match actual speed.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0721 with your vehicle's actual symptoms for more complete diagnostic guidance.
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