P0720 meaning: Output Speed Sensor Circuit Explained
Understand P0720 meaning, common causes, and how to fix it. Learn DIY checks and when to consult a specialist for output speed sensor circuit issues.
P0720 meaning
The P0720 code signals a problem with the output speed sensor circuit in your vehicle's transmission system.
At a glance
| Severity | Can you keep driving? | DIY difficulty | Typical fix path |
|---|---|---|---|
| moderate | short trips only | varies | sensor replacement |
What it means
The output speed sensor provides critical data to the transmission control module for proper gear shifting. When the circuit fails, the module cannot accurately determine vehicle speed, potentially causing shifting issues.
Most common causes
- Faulty output speed sensor
- Damaged wiring or connectors
- Transmission fluid contamination
- Internal transmission issues
Live scan PIDs
During a live scan, you might see:
- P0601 meaning: Internal Control Module Memory Checksum Error Explained
- P0501 meaning: Vehicle Speed Sensor Range/Performance Explained · OBD2 Online
- P0461 meaning: Fuel Level Sensor A Circuit Range/Performance Explained · OBD2 Online
DIY-safe check
Inspect the sensor wiring and connectors for corrosion or damage. Ensure the electrical connection is secure and free from moisture.
When to see a specialist
If the wiring appears intact or the issue persists after inspection, consult a transmission specialist. Internal sensor failure or transmission problems require professional diagnosis.
Cars specialists
FAQ
What does P0720 mean?
P0720 indicates a fault in the output speed sensor circuit, which monitors transmission output shaft speed for proper gear changes.
Can I keep driving with this code?
Short trips may be possible but avoid extended driving as shifting problems could develop and affect transmission longevity.
How much does it cost to fix P0720?
Repair costs vary significantly based on vehicle make, labor rates, and whether the sensor or wiring needs replacement — always confirm with a specialist.
Can I fix P0720 myself?
Basic wiring checks are DIY-friendly, but sensor replacement often requires specialized tools and transmission knowledge — professional service is recommended for accuracy.
Talk to a specialist today to resolve your P0720 code safely and correctly.