P0720Medium urgency
Output Speed Sensor Circuit Malfunction
Transmission · Speed Sensors
⚠️ Fix soon — speedometer and shift points affected.
What this means
The transmission output shaft speed sensor has failed. A failure causes erratic speedometer readings and poor shift quality.
Likely causes
- Failed output speed sensorMost common
- Wiring harness damageCommon
- Damaged reluctor ringCommon
Estimated repair cost
Output speed sensor replacement$100 – $350
Wiring repair$75 – $250
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Frequently asked questions
What does P0720 mean?
The transmission output shaft speed sensor has failed. A failure causes erratic speedometer readings and poor shift quality.
Is P0720 serious?
Fix soon — speedometer and shift points affected.
How much does it cost to fix P0720?
Repair costs for P0720 range from $100 – $350 depending on the root cause and your vehicle.
Can I drive with P0720?
You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.