P0721
Output Shaft Speed Sensor Circuit Range/Performance
P0721 is an OBD-II diagnostic trouble code meaning: Output Shaft Speed Sensor Circuit Range/Performance. Common causes: output shaft speed sensor malfunction, damaged or broken wiring. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Enabling emergency transmission mode
- Check Engine light comes on
- Reduced engine power
- Problems with cruise control
Causes
- Output shaft speed sensor malfunction
- Damaged or broken wiring
- Poor contact in the sensor connector
- Problems with the transmission control unit
- Mechanical transmission problems
How to Fix
- Check the condition of the sensor and its connector
- Check the integrity of wiring and contacts
- Test the sensor with a multimeter
- Replace sensor if necessary
- Check transmission control unit
Related codes
Error P0721 by Vehicle Brand
FAQ
What does the P0721 code mean?
P0721 is an OBD-II diagnostic trouble code that indicates: Output Shaft Speed Sensor Circuit Range/Performance
What causes a P0721 error code?
The most common causes of P0721 include: Output shaft speed sensor malfunction; Damaged or broken wiring; Poor contact in the sensor connector; Problems with the transmission control unit.
How do I fix a P0721 diagnostic trouble code?
To fix P0721: Check the condition of the sensor and its connector. Check the integrity of wiring and contacts. Test the sensor with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0721?
Limited driving only, diagnose soon
How much does it cost to fix P0721?
The estimated repair cost for P0721 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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