Engine Error
P0720
Output Speed Sensor Circuit
Severity
High
Symptoms
Speedometer stops working, erratic shifting, vehicle stuck in limp mode
Common Causes
- Defective output speed sensor (OSS)
- Metal shavings on the magnetic sensor
- Wiring open or shorted
- Internal transmission failure
How to Fix
- 1 Remove and clean or replace OSS
- 2 Inspect wiring harness for damage
- 3 Check transmission fluid for heavy metal debris
- 4 Replace transmission speed sensor
Estimated Repair Cost
USD
$100
–
$350
OSS Sensor replacement: $150 - $350