P0720

Symptom:
P0720-OUTPUT SPEED SENSOR ERROR

When Monitored:
The transmission gear ratio is monitored continuously while the transmission is in gear.

Set Condition:
If there is an excessive change in the Output RPM in any gear.

Test 1:

Test 2-5:

Test 6-8:

Test 9-11:

POSSIBLE CAUSES
- OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN
- SPEED SENSOR GROUND CIRCUIT OPEN
- OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND
- OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
- SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE
- OUTPUT SPEED SENSOR
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS